I have a William Ewan who married 7-25-1841 in Dearborn Co. IN to Tamanda P. Sedwick (according to the Indiana state marriage index). I believe, but cannot yet prove, that William Ewan was the son of Samuel and Mary (Sprague) Ewan. before her marriage to Samuel in 1806 in Onatario NY, Mercy was married to William Hawley.