Complex sentence: William Robert Spencer (9 January 1769--22/23 October 1834), English poet and wit, was the younger son of Lord Charles Spencer and his wife Mary Beauclerk.
Split into simpler sentences: William Robert Spencer (9 January 1769--22/23 October 1834) was an English poet and wit from the Spencer family. He was the younger son of Lord Charles Spencer and his wife Mary Beauclerk.