Sylvanus Knight was my ggg-grandmother's (Beulah Fish Weinhart) second husband and step-father to my gg-grandfather Lorenzo Dow Weinhart. Sylvanus and Beulah were married in August, 1860 about six months after her first husband died. Sylvanus was very mechanically inclined. The picture shows part of his patent for improvements for an animal trap. This was dated December 12, 1865 and that at this time he along with Beulah were living in the city of Adel, in Dallas County, and in the state of Iowa.