I do not know if any of this info will help but here goes: John Adam Heiser immigrated on 16 Sept. 1751 in Ship Brothers-Port of Philadelphia. He married Anna Maria and they had the following children: Rudolph, Ulrich, Catherine, Henry, Charles, Susanna, Adam John George, Frederick, and Ernst.They are all named in Berks Orphan's Court records.
Ulrich Heiser was born about 1755 in Berks Co. He married Margaretha.They had John, Andrew, John Adam, Daniel, Barbara, and George.
Charles Heiser born 1760/1765 married Anna Maria Miller/Muller. They had George, Molly, Margaret, h Adam, Eva Mary, Charles, Frederick, and Heinrich.
Adam Heiser also had a George.He married Susanna Marburger and they had Simon and George.
I do not know if any of these George's are related to you but I thought you might like the info.This info came from a serch on RootsWeb.com.It is part of a family history of John Adam Heiser's descendants: Berks/Schuylkill county, PA