He was born in Petersham, Massachusetts, the son of Joseph Baker and Molly Stevens, and came to Dunham, Quebec with his parents in 1799. Baker was involved in raising and importing livestock. In 1818, he married Lavina Barnes, his cousin. He was named a commissioner for the trial of minor causes and justice of the peace in 1830. He voted against the Ninety-Two Resolutions. Baker was a lieutenant-colonel in the militia and supported the British during the Lower Canada Rebellion. His brother William succeeded him as representative for Missisquoi in the legislative assembly in 1834. Baker died in Dunham at the age of 76.
- "Biography". Dictionnaire des parlementaires du Québec de 1792 à nos jours (in French). National Assembly of Quebec.
- Collins Dictionary
- "Definition of Stevens". Retrieved 5 November 2012. "Thaddeus (ˈθædɪəs). 1792–1868, US Radical Republican politician. An opponent of slavery, he supported Reconstruction and entered the resolution calling for the impeachment of President Andrew Johnson"
- Journals of the House of Assembly of Lower Canada, from the 7th January to the 18th March, 1834 p. 337