I am looking for Mary Cowden (may have also been known as Margaret) date and place of birth unknown who m John Mercer. Their daughter, Margaret (Mary) Mercer b. 1786, d. 27 Nov 1838, m. Robert Welsh b. 1776, d. 1855. They lived in Washington Co PA where their children were born. They subsequently moved to Muskegon Co OH. Their daughter, Eliza Welsh, b. 11 Mar 1816, is my second great grandmother. Eliza married Joseph Chambers, near Dresden, Muskegon Co, OH, 5 Nov 1840 . I am also searching for information on the family of Eliza's father, Robert Welsh, and husband, Joseph Chambers, b. 25 May 1814, in Washington Co PA. Joseph may be the son of Willaim Chambers, nothing else is known. Susan Wyckoff