Stanford, You Might check out Claus Jansen/Johnson.I know you spelled Janson and not Jansen but those names do get turned around, also Claus was born in Germany and he had at least three children`s with the same names you have included in your search.He owned land in Berbers Twp.Pa.,which I understand is now Montgomery County.I think he also lived in Germantown at one time.But there is another ringer to confuse us.It seems as if there was another Claus Johnson in that area around the same time period. I learned that when I looked up Claus Johnson`s will on line and it wasn`t the same Claus.I hope I have given you some direction to look and not confused you. Claude Johnson