Hi. Looking through old messages and came across yours. My husband is related to Pfost. His Mother was Helen Germaine Pfost. Her parents were Jay Guy Pfost and Cosby Victoria Alley Pfost. They lived in Kentucky. His Father was Warwick B. Pfost whose Father was Jonathan Pfost whose Father was Isaac Pfost and then Valentine Pfost. Also interested in the German lineage but haven't come across anything. I also didn't know there was a book on the Pfosts written by Doris Poinsett. Will have to track the book down. Also didn't realize part of the family changed name to Post. Thanks everyone for all the info.