I am searching for information on the man who may be my 5th great grandfather. He was a Prussian immigrant who likely disembarked at Philadelphia. I believe this man to have had a wife named Mary, and four sons named John, George, Michael and Philip. I believe they left York Co PA and settled in Rowan Co. after 1781. Because of the numerous spellings of both the given and surname, I am having difficulty locating records for this family. I believe that Yost/Jost/Joseph died about 1798, at that time the sons chose to change the spelling of the name to GATES. If you can help please contact me I would be most appreciative. Thank you. Gena Gates Lally