Don Grady, Robbie on 'My Three Sons' Passes Away at age 68

Actor Don Grady has died. Best known for his portrayal of Robbie Douglas on the vintage comedy series, My Three Sons, Grady was 68 when he passed of cancer in Thousand Oaks, California on June 27.

Born Don Agrati, he first came onto the TV scene as a Mouseketeer on The Mickey Mouse Club. He did some episodic TV, including several western series such as The Restless Gun and The Rifleman, before landing the plum role as one of Fred MacMurray's TV sons, along with Tim Considine and Stanley Livingston. Originally, he was the middle kid, but when Considine left the series, Robbie became the eldest brother on the show with Barry Livingston was added to the cast as an adopted son.

After a decade on the air, Grady also decided to leave the show and Robbie was sent off to Peru, leaving wife Katie and their triplets living with the Douglas family.

However, Grady's road to performing success hit a snag and things did not quite go as successfully as he had hoped. He ended up starring in a stage production of Pippin' and working on his music.

Grady's sister, Lani O'Grady, starred in Eight is Enough. She had some troubles and died in 2001. While the actor dated his My Three Sons co-star, Tina Cole who played wife Katie, the relationship faltered in the long term. Upon his death, Grady leaves behind his wife, Ginnie, and their two children, Joey and Tessa.