The Academy Award nominee's elder brother Jack Garner died on Tuesday (13Sep11) in Palm Springs, California. He was 85.
Jack appeared in more than 60 episodes of The Rockford Files with James, and the siblings also co-starred on the big screen in Maverick and My Fellow Americans.
Jack racked up TV credits with small roles in shows including The Green Hornet, The Doris Day Show, Gunsmoke and The Bionic Woman, and even enjoyed a career as a minor league baseball player.
He also forged a career in music as the onetime lead singer of the house band at Los Angeles' Cocoanut Grove venue, according to Daily Variety.
He is survived by his wife, Betty, as well as a daughter and Murphy's Romance star James, who he affectionately nicknamed Babe.