Lonzo and Oscar were an American country music duo founded in 1945 originally consisting of Lloyd George (1924-1991) as Lonzo and Rollin Oscar Sullivan (1919-2012), best known for being the first to perform the 1948 song I'm My Own Grandpa. George departed in 1950, and Lonzo was later portrayed by Johnny Sullivan (1917-1967) from 1950 to 1967 and by David Hooten from 1967 to 1985, when the band retired (with some final shows performed by Sullivan and first Cleo C. Hogan, then Billy Henson, the later of which eventually bought the rights to the name).