Francesca Segal said on Tuesday  her father died on Sunday at his home in London. She said he had suffered from Parkinson's disease -- a neurological condition that affects movement -- for 25 years. His funeral was held in London on Tuesday, she said.

Segal was a Yale classics professor and screenplay writer when he turned a proposed movie about two college students -- preppy Oliver and smart-mouthed Jenny -- into a novel.

Published in 1970, "Love Story" was a weeper about a young couple who fall in love, marry and discover she is dying of cancer. It was a million seller guaranteed to make readers cry and critics scream.

A much bigger audience caught up with the film version, which starred Ryan O'Neal and Ali MacGraw. Directed by Arthur Hiller, with a plaintive, Henry Mancini-composed theme song that wouldn't quit, "Love Story" gained seven Oscar nominations -- including one for Segal for writing the screenplay, as well as for best picture, best director and best actor and actress. It won one Oscar, for best music.

Segal also wrote a sequel, "Oliver's Story," published in 1977, and made into a film, with O'Neal again in the lead male role. Segal would later say that Oliver was based in part on a couple of Harvard undergraduates who later became quite well known: Al Gore and Tommy Lee Jones. (He disputed reports that Jenny was based on Gore's future wife, Tipper).