Don Louis Agrati

 Don Louis Agrati (June 8, 1944 – June 27, 2012), better known as Don Grady

He was known foremost as one of the Mickey Mouse Mouseketeers and as Robbie Douglas on the long-running ABC/CBS television series My Three Sons. His sister was also an actress, billed as Lani O'Grady. Their mother was Mary Grady, a talent agent. In 1960, he began a 12-year run as Robbie Douglas in the show My Three Sons starring Fred MacMurray. Initially airing on ABC, the show moved to CBS in 1965. During production of My Three Sons, Grady both appeared with his own band The Greefs on the series, writing two original songs for the show and was the drummer for The Yellow Balloon, whose self-titled song became a minor hit in 1967. For a while during the run of the series, he attended Los Angeles City College. While on My Three Sons Grady also appeared in the NBC medical drama, The Eleventh Hour and in two episodes of the NBC education drama, Mr. Novak, starring James Franciscus.

After My Three Sons ended in 1972, Grady pursued a musical career. His works included music for the Blake Edwards comedy film Switch, the theme song for The Phil Donahue Show and for EFX, a Las Vegas multimedia stage show which starred Michael Crawford, David Cassidy, Tommy Tune, and Rick Springfield. As a stage performer, he starred in the national tour of Pippin and had roles in Godspell and Damn Yankees. Grady married Virginia "Ginny" Lewsader in 1985, having met her at Disneyland. The couple had two children, Joey and Tessa. Don Grady died from cancer at age 68 in June of 2012.