Penn, William. Founder of Pennsylvania. Born in 1644, son of Sir W. Penn who, with Venables, took Jamaica. He became a Quaker while at Oxford, and was several times imprisoned for his writings. In 1682, he embarked for the colony of the New Netherlands, which had been granted him by Charles II, and founded Philadelphia, but died in England in 1718, having been in great favor at court under James II.