William Penn (Admiral)

Sir William Penn (1621 - 1670) rose to the rank of Admiral under the English Commonwealth, but was dismissed from command by Oliver Cromwell despite the success of the expedition, jointly commanded by him, which captured Jamaica. Under Charles II, he had some commands at sea, but more significantly served on the Navy Board where he was a colleague of Samuel Pepys, who had a poor opinion of him, and only ever expressed approval of his knowledge of naval warfare.