Chicago Sun times only knew the first and middle name
Reitwiesner (wargs) states he got his information on Gutknecht ancestry from Pennsylvania Genealogical Magazine cited. There are four issues in the volume, Wargs did not state which issue (Number 1-4) where the cited material occurs.
Patricia Law Hatcher, ed., "Gutknecht in Germantown from Bischweiler in 1749 with notes on Grünholtz", Pennsylvania Genealogical Magazine (Diane Publishing Co.) 44: 37–42
Wargs reports "Bischweiler", the German spelling of this town in the contested Alsace region.