David Cassidy

NEW YORK — David Cassidy, the teen and pre-teen idol who starred in the 1970s sitcom “The Partridge Family” and sold millions of records as the musical group’s lead singer, died Tuesday at age 67.

Cassidy, who announced earlier this year that he had been diagnosed with dementia, died surrounded by his family, a family statement released by publicist JoAnn Geffen said. Geffen said on Saturday that Cassidy was in a Fort Lauderdale, Fla., hospital suffering from organ failure.

“The Partridge Family” aired from 1970-74 and was a fictional variation of the ’60s performers the Cowsills, intended at first as a vehicle for Shirley Jones, the Oscar winning actress and Cassidy’s stepmother.

Jones played Shirley Partridge, a widow with five children with whom she forms a popular act that travels on a psychedelic bus. The cast also featured Cassidy as eldest son and family heartthrob Keith Partridge; Susan Dey, later of “L.A. Law” fame, as sibling Laurie Partridge and Danny Bonaduce as sibling Danny Partridge.

It was an era for singing families — the Osmonds, the Jacksons. “The Partridge Family” never cracked the top 10 in TV ratings, but the recordings under their name, mostly featuring Cassidy, Jones and session players, produced real-life musical hits and made Cassidy a real-life musical superstar.

The Partridges’ best known song, “I Think I Love You,” spent three weeks on top of the Billboard chart at a time when other hit singles included James Taylor’s “Fire and Rain” and Smokey Robinson and the Miracles’ “The Tears of a Clown.”

The group also reached the top 10 with “I’ll Meet You Halfway” and “Doesn’t Somebody Want to be Wanted” and Cassidy had a solo hit with “Cherish.”

“In two years, David Cassidy has swept hurricane-like into the pre-pubescent lives of millions of American girls,” Rolling Stone magazine noted in 1972. “Leaving: six and a half million long-playing albums and singles; 44 television programs; David Cassidy lunch boxes; David Cassidy bubble gum; David Cassidy coloring books and David Cassidy pens; not to mention several millions of teen magazines, wall stickers, love beads, posters and photo albums.”

Cassidy’s appeal faded after the show went off the air, although he continued to tour, record and act over the next 40 years. Meanwhile, “The Partridge Family” remained popular in re-runs and Cassidy, who kept his dark bangs and boyish appearance well into middle age, frequently turned up for reunions and spoke often about his early success.

Even while “The Partridge Family” was still in primetime, Cassidy worried that he was mistaken for the wholesome character he played. He posed naked for Rolling Stone in 1972, when he confided that he had dropped acid as a teenager. Cassidy maintained an exhausting schedule during the show’s run, filming during the week and performing live shows over the weekend.

Cassidy himself was estranged from his father. Born in New York City in 1950, he was the son of actors Jack Cassidy and Evelyn Ward and half-brother of entertainer Shaun Cassidy.

David Cassidy’s parents split up when he was 5 and he would long express regret about Jack Cassidy, who soon married Shirley Jones, being mostly absent from his life. David Cassidy stayed with his mother and by the early 1960s had moved to Los Angeles.