Jonathan D. Davis (June 29, 1795 – May 15, 1853) was an American physician and politician.
He worked as a store clerk and teacher to pay for his own academic and medical education.
[1] He moved to Plymouth, Michigan, in 1828, purchased land, and began a career as a doctor and farmer.
[3] He was briefly commissioned twice more, once during the Black Hawk War as a major in 1832, and again during the Toledo War when he served in September 1835 as a colonel, commanding the 1st Regiment, 2nd Brigade, 1st Division (Washtenaw County).
[4] Davis served as a territorial judge and was later elected as a delegate to the state constitutional convention in 1835, then as a Democrat to the Michigan Senate in the first election under the new constitution, and served from 1835 to 1837.