Washington, D.C. United States John Humbird Duffey Jr. (March 4, 1934 – December 10, 1996) was a Washington D.C. based bluegrass musician. Duffey was born in Washington, D.C., and lived nearly all his life in the Washington D.C. area. He graduated from Bethesda-Chevy Chase High School in suburban Maryland. Duffey learned to play the mandolin, dobro, and guitar, in addition to his tenor singing voice. He founded two of the most influential groups in bluegrass,... more
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