Complex sentence: Jacob Pleydell-Bouverie, 4th Earl of Radnor (18 September 1815--11 March 1889), was the son of William Pleydell-Bouverie, 3rd Earl of Radnor and Judith Anne St. John-Mildmay.
Split into simpler sentences: Jacob Pleydell-Bouverie, 4th Earl of Radnor was born on 18 September 1815 and died on 11 March 1889. He was the son of William Pleydell-Bouverie, 3rd Earl of Radnor and Judith Anne St. John-Mildmay.