Keen was born in Philadelphia in 1815 and studied at Hamilton College, 1834–38. In 1837 he attended the Baptist convention in Philadelphia when he was a resident of New Jersey.[2] Keen delivered several speeches that were deemed important enough to be published, including "The Co-Operation of the Churches with the Ministry,"[3]Characteristics of the Times, Strong Incentives to Intellectual Effort, which was an address to the literary societies at Howard College (now Samford University) in Marion Alabama in 1850[4] and Elements of a Church's Prosperity: A Sermon, Delivered in the St. Francis St. Baptist Church, Mobile, November 18th, 1849.[5] In 1860 he delivered a commencement address at Wake Forest in North Carolina.[6] At that point he was a minister in Petersburg, Va.
He was married to Eleanor Jones and they had two daughters, Fannie Keen and Mary Lecock Keen Armistead (1841–1927). He died in 1887.
^The times we live in: an address delivered before the Philomathesian and Euzelian Societies of Wake Forest College, N.C., June 13, 1860. See also Alfred L. Brophy, The Republics of Liberties and Letters, 89 N.C. Law Review 1879 (2009).