Thaddeus Mason Harris (1768-1842) was a Harvard librarian, Unitarian minister and author in the early 19th Century. Probably his most noted book was A Natural History of the Bible published in 1821.[1]
Harris' father was killed fighting on the colonists side in the American Revolutionary War. Harris had been born in Charlestown, Massachusetts but after his fathers death was sent to live on a farm in Stirling, Massachusetts. Harris then went to study at Harvard University from which he graduated in 1878. He then was a school teacher at Worcester, Massachusetts before becoming the librarian of Harvard in 1781 and then being appointed the minister of the 1st Unitarian Church of Dorchester, Massachusetts in 1791.
Harris's son Thaddeus William Harris would also serve as a librarian at Harvard and be one of the leading American naturalists in the first half of the 19th century.