I just looked around

Moms Mabley - "her version of "Abraham, Martin and John" hit #35 on the Billboard charts in the summer of 1969. At 75 years of age, Moms became the oldest person ever to have a US Top 40 hit." (wiki)

http://www.youtube.com/watch?v=Ge32xtm23rQ&feature=related

http://www.youtube.com/watch?v=nbnaaz75M4g&feature=related

The original is by Dion.