Lonzo and Oscar were a country music duo originally consisting of Lloyd Leslie George (1924-1991) and Rollin Lillian Sullivan (b. 1919), best known for being the first to perform the 1948 song "I'm my Own Grandpa." Lonzo was later portrayed by Johnny Sullivan from 1950-1967 and by David Hooten from 1967-1980s. George continued performing under the stage name Ken Marvin.

Lonzo & Oscar on Last.fm.