Isaac Penington

Isaac Penington (1616–1679) was one of the early members of the Religious Society of Friends (Quakers) in England. He wrote about the Quaker movement and was an influential promoter and defender of it.

Life He was the oldest son of Isaac Penington, a Puritan who had served as the Lord Mayor of London. He entered the Inner Temple in 1634, and matriculated at St Catharine's College, Cambridge in 1637. He was called to the bar in 1639.

Convinced by the Quaker faith, Penington and his wife joined the Society of Friends in 1657

Family Penington married a widow named Mary Springett, a notable woman in her own right, and they had five children. Her daughter Gulielma, from her first marriage to Sir William Springett (who died young), later married William Penn, founder of Pennsylvania, as his first wife.