Saoirse Kennedy Hill’s Cause of Death Revealed

Three months after her sudden passing, more details have been revealed about the death of Robert F. Kennedy's granddaughter Saoirse.

According to her death certificate, the 22-year-old's cause of death was an accidental overdose. At the time of her death, methadone, fluoxetine, norfluoxetine, diazepam, nordiazepam, and alcohol were found in her system.

In August, Saoirse was in cardiac arrest when a paramedic arrived at the Kennedys' Massachusetts compound. She was then rushed to Cape Cod Hospital, where she was pronounced dead.

The famous family confirmed her sudden death in a statement, telling People magazine, “Our hearts are shattered by the loss of our beloved Saoirse. Her life was filled with hope, promise, and love. She cared deeply about friends and family, especially her mother Courtney, her father Paul, her stepmother Stephanie, and her grandmother Ethel.”

Robert's widow Ethel Kennedy, 91, released her own statement, saying, “The world is a little less beautiful today. She lit up our lives with her love, her peals of laughter and her generous spirit. Saoirse was passionately moved by the causes of human rights and women's empowerment and found great joy in volunteer work, working alongside indigenous communities to build schools in Mexico. We will love her and miss her forever.”

Assistant District Attorney Tara Miltimore of the Cape & Islands District Attorney's Office said, “Earlier this afternoon Barnstable Police responded to a residence on Marchant Ave in Hyannis Port for a reported unattended death. The matter remains under investigation by Barnstable Police and State Police detectives assigned to the District Attorney's Office.”

At her funeral, Saoirse's cousin Timmy Shriver described her as a “child of the sea.” He went on, “We're not afraid to cry anymore, and thank goodness we're making up for lost time. We prize bravery here. But these few days have been all about facing our pain. It may be the bravest thing we can do. She's changing us, what no other member of our family could do. She softened this place and opened us to one another … She is our wounded healer.”

Less than a week before her death, Saoirse appeared to be enjoying her summer days at the Kennedy Cape Code estate. In a photo posted by her uncle, Robert F. Kennedy Jr., she was seen jumping into the water.

Saoirse was the only daughter of Courtney Kennedy Hill, 62, and Paul Hill, 65. Courtney is one of Robert and Ethel's 11 children.

Years before her death, Saoirse opened up on her struggles with depression and mental illness in an essay for Deerfield Academy's student newspaper The Deerfield Scroll. She shared, “My depression took root in the beginning of my middle school years and will be with me for the rest of my life. Although I was mostly a happy child, I suffered bouts of deep sadness that felt like a heavy boulder on my chest.”