Sir John Perrot (7 November 1528 – 3 November 1592) served as lord deputy to Queen Elizabeth I of England during the Tudor conquest of Ireland. It was formerly speculated that he was an illegitimate son of Henry VIII, though the idea is rejected by modern historians. Sir John Perrot, was a figure of unusual power and influence in Tudor Britain and Ireland. Born near Haverfordwest in 1528, he inherited wealth and power – the Perrots had been accumulating both in west Wales for centuries – and gained more ingratiating himself with the English court.