>Grietje Jacobs and family accepted the name Sikkema.
>Jan Jacobs Wiersema was the son of Jacob Garmts and Martje >Geutjes; both didn't have a familyname yet.
This implies that Jan Jacobs "accepted" the name Wiersema.There is a well known line of Wiersema's in Holland since the 1500's.
Do you know anything yet about the prototcol for "accepting" names? Were there any? Might they have worked on lands owned by Wiersema's? That may not be in the archives.Those must have been simpler times.