Complex sentence: Sir John Perrot (c.1527-September, 1592) was lord deputy of Ireland under Queen Elizabeth I of England and is best known for his part in the Tudor re-conquest of Ireland.
Split into simpler sentences: Sir John Perrot (c.1527-September, 1592) served as Lord Deputy of Ireland under Queen Elizabeth I of England. Posterity remembers him for his part in the Tudor re-conquest of Ireland.