I was putting away my files on the Harrises of Mt. Tirzah and discovered another source you may want to follow up on. This tells about the whole family and may be able to be obtained locally. Chronicles of St. Mary's, Quarterly Magazine of the St. Mary's County Historical Society. Vol 45 Spring 1997 No. 1. p. 189-193 The main article is about Joseph Harris of "Ellenborough." Col. Joseph Harris b. 1773 - d. 1855 is also buried at Mt. Tirzah. The article is very concise and will provide the information you are looking for. Good Luck Chuck Harris