Complex sentence: Robert Isaac Wilberforce (19 December 18023 February 1857) was an English clergyman and writer, second son of abolitionist William Wilberforce, and active in the Oxford Movement.
Split into simpler sentences: Robert Isaac Wilberforce (19 December 18023 February 1857) was an English clergyman and writer. He was second son of abolitionist William Wilberforce, and active in the Oxford Movement.