Sir Samuel Luke (21 March 1603 – 1670) was a prominent Presbyterian. Governor of the Parliamentary outpost in Newport Pagnell, Buckinghamshire from late 1642 until June 1644 during the English Civil War. During the war he was also Scoutmaster to the Earl of Essex.
Usually identified as the original for the title character of the satirical heroic poem Hudibras by Samuel Butler. http://en.wikipedia.org/wiki/Samuel_Luke