Mark Sydney Davis is best known as the adopted son of legendary entertainer Sammy Davis Jr. and Swedish actress May Britt. Born in Los Angeles in 1960, Mark grew up in one of the most famous entertainment families of the 20th century but chose a much quieter adult life. His story later attracted renewed attention because he wondered whether Sammy might secretly have been his biological father. A televised DNA comparison with Sammy’s biological daughter Tracey Davis eventually showed that Mark and Tracey did not share a biological parent, leaving Mark’s biological origins unresolved.
Quick Bio of Mark Sydney Davis
| Detail | Information |
|---|---|
| Full Name | Mark Sydney Davis |
| Also Written As | Mark Sidney Davis |
| Date of Birth | April 6, 1960 |
| Age in 2026 | 66 years old |
| Birthplace | Los Angeles, California, USA |
| Nationality | American |
| Famous For | Being Sammy Davis Jr.’s adopted son |
| Adoptive Father | Sammy Davis Jr. |
| Adoptive Mother | May Britt |
| Biological Parents | Not publicly identified |
| Sister | Tracey Davis |
| Brother | Jeff Davis |
| Adoptive Half-Brother | Manny Davis |
| Children | Ryan and Andrew |
| Former Work | Assistant stage manager; later Costco photo-counter employee |
| Marital History | Reportedly married three times |
| Current Wife | Not publicly confirmed |
| Net Worth | Not independently verified |
| Public Profile | Very private |
A birth-record source lists Mark Sidney Davis as born on April 6, 1960, in Los Angeles, while PBS and Sammy Davis Jr.’s official site identify Mark as one of the sons adopted by Sammy and May Britt.
Who Is Mark Sydney Davis?
Mark Sydney Davis grew up surrounded by extraordinary fame.
His father was not simply a successful singer.
Sammy Davis Jr. was a singer, dancer, actor, comedian and major live performer who became closely associated with Frank Sinatra, Dean Martin and the Rat Pack.
His mother, May Britt, was a Swedish actress who appeared in Hollywood movies before largely stepping away from acting after marrying Sammy.
Yet Mark did not build the same kind of public career.
He never became a major singer.
He did not establish himself as a movie star.
And he did not spend his adult life trying to turn the Davis surname into celebrity attention.
Instead, most of what people know about Mark comes from his family history and his later search for answers about his birth.
Is It Mark Sydney Davis or Mark Sidney Davis?
Both spellings appear online.
Modern articles often use Mark Sydney Davis.
Historical material frequently uses Mark Sidney Davis.
The 1962 contemporary newspaper report about his adoption called him Mark Sidney Davis, as do older Getty captions showing him with Sammy, May and Tracey.
Birth-record material also uses Mark Sidney Davis.
For search purposes, Mark Sydney Davis has become very common.
But readers researching older family records should expect to see Sidney as well.
They refer to the same person.
How Old Is Mark Sydney Davis?
Mark was born on April 6, 1960.
That makes him 66 years old in 2026.
A birth-record database citing a birth certificate gives Los Angeles as his birthplace and April 6, 1960 as the date.
Unlike many celebrity children, Mark did not spend decades appearing in magazines or television.
That is one reason even basic facts such as his birthday are less widely known than details about his famous father.
Was Mark Sydney Davis Adopted?
Yes.
The Davis family publicly identified Mark as an adopted son.
Sammy Davis Jr.’s official website says Sammy and May Britt had one biological daughter, Tracey, and adopted two sons, Mark and Jeff.
PBS’s American Masters timeline places Mark’s adoption in 1963.
Historical newspaper evidence shows that the legal process stretched across a period of time.
A November 1962 UPI report said legal adoption proceedings had been completed for two-and-a-half-year-old Mark Sidney Davis and quoted Sammy as saying they had adopted Mark to be a big brother to Tracey.
Another newspaper report from June 1963 said final court permission had recently been issued.
That helps explain why some sources say 1962 and others say 1963.
Why Did Sammy Davis Jr. and May Britt Adopt Mark?
Sammy publicly spoke about adoption as something he and May had considered even before marriage.
The 1962 UPI report quoted him saying the couple wanted to adopt more children and that Mark had joined the family partly to be an older brother to their daughter Tracey.
Tracey later recalled similar family discussions.
Material from her memoir records Sammy saying that he and May had talked about adopting children while dating because they believed in giving children a home.
Mark therefore entered the Davis family as a very young child and spent almost his entire remembered childhood as Sammy and May’s son.
Who Is Mark Sydney Davis’s Mother?
His adoptive mother is May Britt.
She was born in Sweden and became an actress.
She married Sammy Davis Jr. in November 1960 during a period when interracial marriages remained illegal in many American states.
Their marriage received enormous attention.
They had daughter Tracey in 1961 and later raised adopted sons Mark and Jeff.
Mark’s biological mother has not been publicly identified.
That mystery became central to Mark’s story much later in life.
Mark Grew Up With Tracey and Jeff Davis
Mark was the oldest of the three children in Sammy and May’s household.
Tracey Hillevi Davis was born in 1961.
She was Sammy and May’s biological daughter.
Jeff Davis was another adopted son who joined the family later.
PBS lists Mark’s adoption in 1963 and Jeff’s in 1965.
Contemporary family photographs show May with Tracey, Mark and baby Jeff.
The family attracted particular attention because May was white and Swedish while the children were Black, at a time when interracial family life still faced strong social prejudice.
Sammy Davis Jr. Was Often Away From His Children
Growing up with a famous father did not automatically mean spending much time with him.
Sammy’s career required constant performances, travel and rehearsals.
Tracey Davis later spoke openly about that problem.
She told the Los Angeles Times that her father loved his children but was essentially married to his work and did not know how to make family his first priority.
That experience affected Mark too.
Later accounts of Mark’s life describe him as wanting to be more present for his own children than Sammy had been for him.
The difference between Sammy Davis Jr. the entertainer and Sammy Davis Jr. the father became an important theme throughout the family’s later interviews and memoirs.
Sammy and May Britt Divorced
Sammy Davis Jr. and May Britt divorced in 1968.
Their breakup changed the children’s family structure.
PBS’s timeline records their divorce that year.
Mark was only around eight years old.
Sammy later married dancer and actress Altovise Gore in 1970.
Years later, Sammy and Altovise adopted another son, Manny Davis.
That made Manny another member of Mark’s wider Davis family.
Who Is Manny Davis?
Manny Davis entered Sammy’s family through his later marriage to Altovise Gore.
IMDb and other family references identify Manny as a later adopted son.
Because Mark and Manny were adopted during different marriages, they are often described as adoptive half-brothers.
The two grew up in different periods of Sammy’s life.
Mark experienced the May Britt family years.
Manny belonged to Sammy’s later family with Altovise.
Why Did Mark Wonder If Sammy Was His Biological Father?
This became the biggest mystery in Mark’s adult life.
For most of his childhood, Mark understood that he had been adopted.
But as he grew older, people reportedly made comments suggesting Sammy might actually be his biological father.
Mark also believed they shared physical similarities.
Then came something much more emotional.
Near the end of Sammy’s life, Mark visited him.
According to Mark’s later account, Sammy held him and told him:
“You are my son.”
Inside Edition reported that Mark interpreted the moment as possibly revealing something deeper about his parentage.
But those words could also simply have meant exactly what they said emotionally.
Adopted or not, Mark was Sammy’s son.
The Birth Certificate Made the Mystery Bigger
In 2013, Mark obtained a birth certificate that complicated everything.
The document reportedly listed Sammy Davis Jr. as his father and May Britt as his mother.
For Mark, this seemed important.
Could the adoption story have hidden a biological relationship?
There was one obvious problem.
May Britt denied being Mark’s biological mother.
A birth certificate created after an adoption can reflect legal parentage rather than biological parentage.
So the certificate alone could not answer the question.
Mark needed genetic evidence.
Mark Sydney Davis and Tracey Davis Took a DNA Test
In 2015, Mark’s question reached national television.
He and Tracey agreed to a DNA comparison.
The logic was simple.
Tracey was Sammy and May Britt’s biological daughter.
If Sammy were also Mark’s biological father, Mark and Tracey should share DNA as half-siblings.
If May were Mark’s biological mother, they should also share maternal DNA.
Inside Edition revealed the results in April 2015.
The test found that Mark and Tracey did not share a biological parent.
That result strongly ruled out both Sammy and May as Mark’s biological parents, assuming Tracey’s established parentage and the accuracy of the test.
Was Mark Sydney Davis Sammy Davis Jr.’s Biological Son?
According to the available DNA evidence, no.
This is where articles need to separate family relationship from biology.
The official Sammy Davis Jr. estate calls Mark an adopted son.
PBS does the same.
Inside Edition’s DNA test showed that Mark and Tracey did not share biological parentage.
So Mark should not be described as Sammy’s confirmed biological child.
But that does not make him any less Sammy’s son in the legal and family sense.
Sammy raised him.
Mark carried his surname.
And Sammy himself reportedly told Mark at the end of his life that he was his son.
Who Are Mark Sydney Davis’s Biological Parents?
That remains unknown publicly.
The DNA test answered one major question but opened another.
If Sammy and May were not his biological parents, who were?
Mark has not publicly produced a definitive answer.
No reliable source has named a confirmed biological father or mother.
That means websites presenting specific people as his birth parents without strong evidence should be treated cautiously.
The honest answer is:
Mark Sydney Davis’s biological parents have not been publicly established.
What Did Mark Sydney Davis Do for Work?
Mark did spend some time around his father’s entertainment career.
A later profile reports that he worked as an assistant stage manager during one of Sammy’s touring periods.
His tasks reportedly included helping prepare stage items and supporting the show behind the scenes.
That is very different from performing.
Mark was not trying to become the next Sammy Davis Jr.
He worked behind the curtain rather than in front of it.
Eventually, he moved even farther away from show business.
Mark Sydney Davis Worked at Costco
By 2015, Mark was working behind the photo counter at a Costco.
Inside Edition introduced him as a Costco photo clerk when covering his DNA story.
For some readers, that sounds surprising.
How could the son of one of the biggest entertainers in American history be working an ordinary retail job?
But Mark appears to have valued a normal, stable life more than celebrity.
He did not spend decades trying to profit publicly from his father’s name.
That ordinary career became part of what made his story unusual.
Did Mark Sydney Davis Inherit Sammy’s Fortune?
There is no reliable public evidence showing that Mark inherited a huge personal fortune.
Stories about Sammy’s finances are complicated.
He earned enormous sums during his career but also faced serious financial and tax problems.
Mark’s own personal finances have never been publicly documented in enough detail to calculate his net worth.
So claims that he is secretly worth millions simply because Sammy was famous should not be treated as fact.
What Is Mark Sydney Davis’s Net Worth?
His exact net worth is unknown.
There are no audited financial records.
No dependable public estimate exists.
And Mark’s relatively private adult life gives outsiders very little information about:
property,
savings,
investments,
inheritance,
income,
or debts.
A responsible biography should therefore avoid making up a number.
Is Mark Sydney Davis Married?
Mark has kept his romantic life largely private.
A later biography citing earlier reporting says Mark has been married three times, but the identities of his former spouses have not been consistently documented in major sources.
That means it would be misleading to invent names or wedding dates.
His current marital status is also not clearly established through dependable recent reporting.
The best answer is:
Mark has reportedly married three times, but his current wife or partner is not publicly confirmed.
Does Mark Sydney Davis Have Children?
Yes.
He has two sons commonly identified as:
Ryan Davis
and
Andrew Davis, sometimes called Andy.
Mark has spoken of wanting to raise his sons differently from the way he experienced his own relationship with Sammy.
A later profile recounting his interview says he described Ryan and Andrew as the joy of his life and explained that he wanted more communication with them than he had experienced with his father.
That makes fatherhood an important part of Mark’s adult story.
Mark Wanted to Be a More Present Father
Sammy Davis Jr. was enormously successful.
But success came with a cost.
He was constantly away.
Tracey publicly discussed that absence.
Mark seems to have taken a lesson from it.
Rather than chasing fame, he prioritized stability and his sons.
That may partly explain why his adult career looked so different from Sammy’s.
Working an ordinary job and going home to his family may have mattered more to Mark than following his father onto a stage.
Tracey Davis’s Death
Tracey Davis died on November 2, 2020.
She was 59.
IMDb records her birth on July 5, 1961, in Los Angeles and her death in Franklin, Tennessee.
Tracey had built her own public connection to the Davis legacy.
She wrote about her father and discussed the complicated experience of loving a man who was a world-famous entertainer but often unavailable at home.
Her relationship with Mark was particularly visible during the 2015 DNA test.
Whatever the test showed genetically, they continued to regard each other as family.
When Did Sammy Davis Jr. Die?
Sammy Davis Jr. died on May 16, 1990.
His death came after a battle with throat cancer.
The final interaction Mark later described happened during Sammy’s last period of illness.
Those words—“You are my son”—stayed with Mark for decades.
Even after DNA evidence ruled out the biological connection Mark had wondered about, the statement could still carry a powerful meaning.
Family does not always depend on genetics.
Mark Sydney Davis Is Not the Raiders Owner Mark Davis
This is an important point because the names can create confusion.
Mark Sydney Davis, Sammy Davis Jr.’s son, is not the same person as Mark Davis, owner of the Las Vegas Raiders.
Raiders owner Mark Davis is the son of Al Davis and Carol Davis.
The men have completely different families and biographies.
Search engines can mix them because both are named Mark Davis and have connections with Las Vegas through famous families.
But they are not related.
Why Is Mark Sydney Davis Famous?
Mark is known mainly because of three things.
First, he is Sammy Davis Jr.’s adopted son.
Second, his childhood placed him inside an extraordinary Hollywood family.
Third, his later DNA search created a fascinating mystery about his biological identity.
Yet the most interesting part may be the path he did not take.
He did not become a Rat Pack-style entertainer.
He did not build a celebrity brand.
He did not spend his life giving interviews.
He chose privacy.
That decision is one reason people remain curious about him today.
What We Actually Know About Mark Sydney Davis
The reliable story is clear once rumors are removed.
Mark Sydney Davis, also historically written Mark Sidney Davis, was born on April 6, 1960, in Los Angeles.
Sammy Davis Jr. and May Britt adopted him when he was a small child, with historical and modern sources placing the final process across 1962–1963.
He grew up with Tracey and Jeff.
Sammy later had another adopted son, Manny, with Altovise Gore.
Mark did some backstage work during Sammy’s career but never became a major entertainer himself.
In adulthood, he questioned whether Sammy might secretly have been his biological father.
A birth certificate added to that confusion.
But a 2015 DNA comparison with Tracey showed that Mark and Tracey did not share a biological parent.
Mark’s biological parents therefore remain unidentified publicly.
He has two sons, Ryan and Andrew, and has lived a much quieter adult life than his famous father.
His exact net worth and current marital status are not reliably known.
Final Thoughts
Mark Sydney Davis’s biography is not really a story about becoming famous.
It is a story about growing up next to fame and then choosing something different.
Mark entered the Davis family as a small child.
Sammy Davis Jr. and May Britt raised him as their son alongside Tracey and Jeff.
The official Sammy Davis Jr. legacy still identifies Mark as Sammy’s adopted son.
For most of his life, that appeared straightforward.
Then questions emerged.
Mark heard suggestions that Sammy might have been his biological father.
He found a birth certificate carrying Sammy and May’s names.
And he remembered Sammy’s emotional final statement telling him that he was his son.
So Mark went looking for a biological answer.
The DNA test gave him one.
He and Tracey did not share a biological parent.
But biology did not erase the family.
Mark had spent decades as a Davis.
Sammy was the father who raised him.
Tracey remained his sister.
And Mark later focused heavily on being a father himself.
For readers searching for Mark Sydney Davis, the clearest answer is this: he is Sammy Davis Jr. and May Britt’s adopted son, born in 1960, brother to Tracey and Jeff, father of Ryan and Andrew, and a private man whose search for his biological roots created one of the most interesting family mysteries connected with the Rat Pack legend.
Frequently Asked Questions About Mark Sydney Davis
Who is Mark Sydney Davis?
Mark Sydney Davis is best known as the adopted son of entertainer Sammy Davis Jr. and actress May Britt.
Is his name Mark Sydney or Mark Sidney Davis?
Both spellings appear. Historical sources commonly use Mark Sidney Davis, while Mark Sydney Davis is widespread in modern online searches.
When was Mark Sydney Davis born?
He was born on April 6, 1960, in Los Angeles, California.
How old is Mark Sydney Davis in 2026?
He is 66 years old.
Is Mark Sydney Davis Sammy Davis Jr.’s son?
Yes. Sammy and May Britt raised and legally adopted Mark as their son.
Is Mark Sydney Davis Sammy Davis Jr.’s biological son?
The available DNA evidence says no. A 2015 test involving Sammy’s biological daughter Tracey found that she and Mark did not share a biological parent.
When did Sammy Davis Jr. adopt Mark?
PBS lists the adoption in 1963. Contemporary reports show proceedings occurring across late 1962 and the first half of 1963.
Who is Mark Sydney Davis’s mother?
His adoptive mother is Swedish actress May Britt.
Who are Mark Sydney Davis’s biological parents?
Their identities have not been publicly confirmed.
Who is Mark Sydney Davis’s sister?
His sister was Tracey Davis, Sammy Davis Jr. and May Britt’s biological daughter.
Who is Mark Sydney Davis’s brother?
He has an adopted brother named Jeff Davis.
Who is Manny Davis?
Manny Davis is another son adopted by Sammy Davis Jr. during his marriage to Altovise Gore.
What did Mark Sydney Davis do for work?
He reportedly worked backstage as an assistant stage manager during Sammy’s touring career. Later, he worked at a Costco photo counter.
Was Mark Sydney Davis an actor?
He did not establish a major professional acting career.
Was Mark Sydney Davis a singer?
No established professional singing career is associated with him.
Did Mark Sydney Davis work at Costco?
Yes. Inside Edition described him as a Costco photo clerk during its 2015 DNA-test report.
Is Mark Sydney Davis married?
He has reportedly been married three times, but reliable information about his current spouse or relationship status is limited.
Does Mark Sydney Davis have children?
Yes. He has two sons, Ryan and Andrew Davis.
What did Sammy Davis Jr. say to Mark before he died?
Mark recalled Sammy telling him, “You are my son,” during one of their final interactions.
Why did Mark take a DNA test?
He wanted to discover whether Sammy Davis Jr. might secretly have been his biological father.
What did the DNA test show?
It showed that Mark and Tracey Davis did not share a biological parent, strongly ruling out Sammy Davis Jr. as Mark’s biological father.
What is Mark Sydney Davis’s net worth?
His net worth has not been independently verified.
Is Mark Sydney Davis the owner of the Las Vegas Raiders?
No. Raiders owner Mark Davis is a completely different person.
Is Mark Sydney Davis still alive?
There is no reliable public report establishing his death. Recent biographies continue to discuss him as a living private individual.
Why is Mark Sydney Davis famous?
He is known primarily for being Sammy Davis Jr.’s adopted son and for his later public search to determine whether Sammy was also his biological father.
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