Saoirse Kennedy Hill, the granddaughter of assassinated presidential candidate Robert F Kennedy, has died.
Emergency services were called to the Kennedy residence in Hyannis Port, Massachusetts on Thursday. The 22-year-old was pronounced dead at Cape Cod Hospital.
She was the daughter of Robert and Ethel Kennedy's fifth child, Courtney.
The Kennedy family has seen a number of tragedies including the assassination of Saoirse's grandfather in 1968.
His murder came only five years after the assassination of his brother, President John F Kennedy, whom he had served under as US attorney general.
"Our hearts are shattered by the loss of our beloved Saoirse. Her life was filled with hope, promise and love," the family said in a statement.
A statement from her grandmother added: "The world is a little less beautiful today."
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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, who said, “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.
Ms Kennedy Hill was the only daughter of Courtney and Paul Michael Hill. Mr Hill is one of four people wrongly convicted of an IRA pub bombing in 1974, who were collectively known as the Guildford Four.
No further details about her death have been released, although US media report she died of an apparent drug overdose.
The 22-year-old was a communications major at Boston College, according to the New York Times, and had suffered from depression.
"My depression took root in the beginning of my middle school years and will be with me for the rest of my life," she wrote in a student newspaper in 2016.
In 2007, People magazine reported that police investigated a kidnapping attempt against the then-10-year-old as she walked home from playing tennis in Cape Cod.
She told police that two men with a white van offered her a ride, but she ran away, the magazine reported at the time.
Police said they were called to a report of "an unattended death" and have launched an investigation.
The compound was the summer White House for John F Kennedy in the 1960s. He was assassinated in Dallas in 1963.
July marked 20 years since the death of President Kennedy's son, John F Kennedy Jr. He was piloting a light aircraft to a wedding at Hyannis Port, but crashed into the sea en route.
More on the Kennedy family
Other Kennedy family tragedies
- President JFK shot and killed in 1963 in Dallas
- Robert F Kennedy (RFK) killed in June 1968 while campaigning as Democratic frontrunner in Los Angeles
- JFK Jr, along with his wife Carolyn and sister-in-law, killed after plane crash off Massachusetts in 1999
- In 1964, brother Ted Kennedy survived a deadly plane crash while travelling cross-country for a campaign event
- Oldest brother Joe Kennedy Jr was killed in 1944 in a bombing run over France during World War II
- Four years later, sister Kathleen Kennedy died in a plane crash at the age of 28
- Ethel and RFK lost their son Michael in 1997 to a ski accident and David who died of a drug overdose in Florida in 1984
- Massachusetts Senator Ted Kennedy died from brain tumour in 2008 at age 77
- In 1973 Ted Kennedy's son Edward Jr lost a leg to bone cancer. In 2009 he told CNN his family is not cursed, saying: "The Kennedy family has had to endure these things in a very open way. But our family is just like... every other family in America in many ways."