Jessica Keenan

Jessica Keenan Wynn, known professionally by her middle and married-into stage name Keenan Wynn and credited in official records as Jessica Keenan, was an American actress and singer who died on April 12, 2026, at the age of 39. She was born Jessica Keenan Armstrong on June 12, 1986, in the Valley Village section of Los Angeles, California, into a family with deep roots in American show business: her great-great-grandfather was the stage and silent-film actor Frank Keenan, her great-grandfather was the comedian Ed Wynn, her grandfather was the actor Keenan Wynn, and her uncle Tracy Keenan Wynn was a screenwriter. She adopted the professional surname Wynn to carry that lineage forward, though her legal surname remained Armstrong, and she was the daughter of Edwyna Wynn and Roger Armstrong.

Keenan built her career primarily in New York theatre before crossing into film and television. She became widely known to musical theatre audiences for originating the role of Heather Chandler in the 2014 off-Broadway production of Heathers: The Musical, a part that made her a favorite of the show's devoted fan base. She later joined the Broadway company of Beautiful: The Carole King Musical as songwriter Cynthia Weil, a role she played on and off for several years. On screen, she was best known for playing the young version of Christine Baranski's character Tanya in the 2018 film Mamma Mia! Here We Go Again. She also did extensive voice and looping work, including a recurring voice role on the animated series The Ghost and Molly McGee, and appeared in the film Clifford the Big Red Dog.

Her career mattered to fans for two overlapping reasons: she represented a fifth generation of an unusually long-running American theatrical dynasty, and she carved out her own identity within musical theatre and family entertainment rather than simply trading on her name. Admirers who found her through Heathers or Mamma Mia! often followed her subsequent stage and voice work closely, and questions about her family connections, especially to Ed Wynn and to actress Christine Baranski, her Mamma Mia! co-star, remained a steady source of public curiosity throughout her career.

Keenan died on April 12, 2026. The full circumstances of her death were not immediately made public, but a Washington County jury later found a man named Ronald Guilder Jr. guilty of murder in connection with her death, confirming that she had been killed rather than dying of natural causes. Beyond the fact of the conviction, further details about the location of the killing, the relationship between Keenan and Guilder, and the motive have not been independently confirmed in reputable reporting available at this time. Her death, coming in the middle of an active career, was met with shock among theatre fans and colleagues, though a formal public statement from her family had not been located as of this writing.

At the time of her death, several aspects of her personal life, including her marital status, whether she had children, and her exact hometown, had not been documented in verifiable public sources, and this page will be updated as confirmed information becomes available.