Here is some more source data on Capt. Fetterman. : Page 645 Army history Stones River,TN 2nd Battalion commanded by Major Fredrick Townsend, Company A by Capt Fetterman National Archives - Reg. Army personnel file (F22 CB 1866) Col. Carrington's report - (File c 10 DP 1867)
I am also looking for a link to him (if there is one) If his family is in the line of Johann Balthesar Fetterman(1713) then his family will be the link. Gordon Fetterman seems to think that line of Fetterman's are from Pittburg. Anyone with more data, feel free to contact me.