I have just gotten the information on Joseph Hertweck. He immigrated to the USA and shows 8 people immigrating with him. I am sending off for the complete list of family members. If it helps , his father was Fridus Hertweck 9-6-1802, and his father was Andreas Hertweck Dec 28,1776 all of Bischwier Germany. I have an aunt who has more and I will let you know what I find. Thanks for the response