Count Guido Roberto Deiro was born February 18, 1938 in Reno, Nevada. He was the son of vaudeville performer and recording star Count Guido Pietro Deiro, who was the first major piano-accordionist to become popular in the United States, and his teenage wife Yvonne Teresa LeBaron De Forrest. Deiro grew up in and around Las Vegas, Nevada and Southern California after his parents’ divorce in 1941.