Complex sentence: Richard Butler, 1st Viscount Mountgarret (1500-20 May 1571) was the son of Piers Butler, 8th Earl of Ormonde and Lady Margaret Fitzgerald.
Split into simpler sentences: Richard Butler, 1st Viscount Mountgarret was born in 1500 AD and died on 20 May 1571. He was the son of Piers Butler, 8th Earl of Ormonde and Lady Margaret FitzGerald.