Hanks, Patrick. Dictionary of American family names. (New York, New York: Oxford University Press, c2003). Benham - English habitational name from a place in Berkshire named with the Old English personal name Benna + Old English hamm 'river meadow'. FOREBEARS John Benham was one of the free planters who assented to the Fundamental Agreement of the New Haven Colony on June 4, 1639.