 He marched north with General William Hull, and opposed Hull's disastrous decision to surrender Detroit.Afterwards, Findlay was promoted to major general in the Ohio militia, and built Fort Findlay at the site of present-day Findlay, Ohio.He was elected to the Nineteenth and Twentieth Congresses and elected as a Jacksonian Democrat to the Twenty-first and Twenty-second Congresses (March 4, 1825 – March 3, 1833).