I am not related to these people and have no further information. I have a sheet from a book (no title) with a little information: Dotterer, John, b. Germany, emigrated & settled in what is now Waynesboro, PA, where he died. His wife was Mary catharine ---& they had John and Frederick, and probably others. Son John, b. 9 Dec 1785, Franklin Co., PA, md. Mary Hoffman, b. 2 May 1785, d. 15 Feb 1855. They resided on farm near what is now Detour, Carroll Co., MD; FR2:1262-3."