My wife also had ancestors from Harford and Cecil Counties, MD, who migrated to Harrison Co. OH. Her direct ancestor, Phillip Fulton (1777-1841)was born and Cecil Co. He married Sarah Hanna of Harford Co. They migrated to Washington Co. PA ca 1805 and the Nottingham Twp, Harrison Co. ca 1810. Phillip's brother, John (1775-1856) followed a similar path to Green Twp Harrison Co. This was apparently an very popular route to Ohio.