Arabella Spencer-Churchill, 58, the unconventional granddaughter of Britain's wartime prime minister and a founder of the Glastonbury rock festival, has died, her husband said.

Mrs. Spencer-Churchill, who had pancreatic cancer, died at home in Glastonbury, southwestern England, on Thursday, said her husband, Ian McLeod. On the same day, her son, Nicholas Jake Barton, was sentenced to three years in prison in Australia for his part in an ecstasy drug racket.

Mrs. Spencer-Churchill was the daughter of Winston Churchill's son, Randolph, and June Osborne.

She was a free spirit in one of the grandest families in Britain, drawn to the hippy life. In the mid-1970s, she lived the down-and-out life as a squatter in London, running a low-cost restaurant for fellow squatters.

"I'm immensely proud of my grandfather, and I hope he would be proud of me, but . . . I was no good at being a Churchill," she said in an interview published in the Independent newspaper in June.