Biber famililes of Berks County PA
Biber families may have come from Kreis Coesfeld Germany listed there as Piepers/Pipers
Today they go by Biebers/Beaver/Biebers/Bewertz/ ect..
The high German Germanisch name for it is "Bewaehrt" meaning tried and true.There was not set law and used Grimm's law of writting German back then.Hence the unclear correct spelling of this name.
I see some Piebers listed at the Catholich Churchof Sankt Vitus , Olfen, Westfalen, Preussen.It is part of Kreis Coesfeld and just south of Eggerode Germany.