Quaker William was the founder of the Province of Pennsylvania, William Penn. He was a prominent Quaker leader and advocate for religious freedom in the 17th century. Penn was born in London in 1644 and became a member of the Religious Society of Friends at the age of 22. He was an early proponent of democracy and religious freedom, advocating for fair treatment of Native Americans. Penn's efforts led to the founding of the Province of Pennsylvania in 1681.