Born in Washington County, Vermont, St. John received limited schooling.
He served during the War of 1812 before moving to Wooster, Ohio, in 1815.
In 1837, he settled in Seneca County, where he engaged in agricultural pursuits, milling, and storekeeping near Tiffin, Ohio.
This article incorporates public domain material from the Biographical Directory of the United States Congress
This article about a member of the United States House of Representatives from Ohio is a stub.