Complex sentence: Owen Brown (February 16th, 1771--May 8th, 1856) father of Abolitionist John Brown, was himself a noted Abolitionist, civil servant, and founder of the Western Reserve Anti-Slavery Society, Western Reserve College, and the Free Congressional Church.
Split into simpler sentences: Owen Brown (February 16th, 1771--May 8th, 1856), father of Abolitionist John Brown, was himself a noted Abolitionist and civil servant. Brown was a founder of multiple institutions including the Western Reserve Anti-Slavery Society, Western Reserve College, and the Free Congressional Church.