Allyn, John, D.D. a Unitarian minister, born in Barnstable, Mass., March 21, 1767. He graduated at Harvard 1785, and in 1788 became pastor in Duxbury, Mass., which position he retained until his death, July 19, 1833. In 1820 he was the delegate from Duxbury in the Constitutional Convention of Massachusetts. He published several of his sermons and charges. — Sprague, Unitarian Pulpit, p. 207.