Born: September 27, 1948
Martinez was born Adolfo Larrue Martinez, III in Glendale, California. His family referred to him as "A", "Little Adolfo", and "Little A" as a child to distinguish him from his father and grandfather. Over time, "A" became the name he would use.
Martinez began his professional career at twelve years old as a singer earning him a talent competition title at the Hollywood Bowl.
He has starred in feature films including The Cowboys, Powwow Highway, and What's Cooking?. The majority of his acting roles have been on television. He had a recurring role on All In The Family as a helper at Archie's bar. In 1978, he appeared as the Indian Circling Hawk in the short-lived ABC series The Young Pioneers.