Filmmaker Takes DNA Test — Finds Out Charles Manson Was Her Grandfather

Sophia Maddox didn't expect the DNA test to change her life. It did.

The filmmaker discovered she is a previously unknown granddaughter of Charles Manson — the cult leader convicted of orchestrating the 1969 murders of Sharon Tate and six other people across two nights in Los Angeles. The discovery forms the basis of a new Hulu documentary called My Grandfather Charles Manson, premiering July 22.

Maddox, who directed the film alongside Alexandra Orton, learned the truth when a DNA test revealed a family connection to her father, Daniel Arguelles — who bears a striking resemblance to Manson. The revelation sent her down a years-long investigation into her lineage, Manson's pathology, and what it means to carry a bloodline most people would want to deny.

"After I learned Charles Manson was my grandfather through a DNA test, I started filming myself because I didn't know how else to cope with the news," Maddox said. "What began as a way to process a shocking family discovery became a deeper investigation into generational trauma, identity, and whether we're destined to repeat the stories we inherit."

According to the documentary's synopsis, Maddox's genetic connection unlocked never-before-released records and exclusive audio recordings that shed new light on Manson's psychology and sociopathy. The more she uncovered, the more her relationship with her father became strained.

"Ultimately, I hope the film reminds people that while we can't choose where we come from, we can choose what we do with that history," she said.

What Was Already Known About Manson's Family

Before this documentary, three sons were publicly known. Charles Manson Jr. — who later changed his name to Jay White — was born in 1956 and died by suicide at 37 in 1993. His son Jason Freeman was given custody of Manson's remains after the cult leader died in prison in 2017.

Charles Luther Manson, born to a woman known as Candy Stevens, later changed his name to Jay Charles Warner and died in Colorado in 2007. Valentine Michael Manson, born in 1968 to early Manson family member Mary Theresa Brunner, was adopted by his maternal grandparents and has lived a deliberately quiet life in the Midwest ever since, reportedly working in manufacturing and raising a family.

Maddox and her father Daniel Arguelles represent a branch of Manson's lineage that has never been publicly identified until now.

The Question the Documentary Is Really Asking

The Manson murders are among the most documented crimes in American history — the subject of books, films, podcasts, and endless cultural analysis for more than 50 years. What My Grandfather Charles Manson appears to be exploring is something different and more personal: what happens to the people who share DNA with a monster, who had no choice in their lineage, and who must figure out how to live with a family history most people only know as a horror story.

The psychological concept of intergenerational trauma — the idea that the effects of traumatic events can be passed down through families, sometimes without the descendants even knowing the source — has gained significant scientific and cultural traction in recent years. Studies on descendants of Holocaust survivors, children of combat veterans, and families touched by severe trauma have found measurable psychological and even physiological effects that persist across generations.

Maddox's situation is unusual in that the source of trauma in her lineage isn't something that happened to her family — it's something a member of her family did to others. How she processes that distinction, and what she does with the history she's inherited, is what the documentary promises to explore.

Charles Manson died in prison in November 2017 at age 83. Nearly nine years later, the ripples from his life are still reaching people who didn't know they were connected to him.

My Grandfather Charles Manson premieres on Hulu on July 22. 

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