Doug Berch

Balis Ritchie	Loraine Wyman
Jethro Amburgey	Bristol Taylor

Balis Ritchie was Jean Ritchie’s father.

Loraine Wyman collected Appalachian and Canadian folk songs in the early 20th century.

Jethro Amburgey was a prolific and influential dulcimer maker.

Bristol Taylor was a dulcimer maker, farmer and poet. I have not found any significant references to him or his work.