Simplify the following text for a Grade 7 native English-speaking person.
Original: George Fox ( July 1624 â `` 13 January 1691 ) was an English Dissenter and a founder of the Religious Society of Friends , commonly known as the Quakers or Friends .
Simplified: George Fox ( July 1624 â `` January 13 , 1691 ) was one of the people that left the Church of England . He was a founder of the Religious Society of Friends , also known as the `` Quakers . ''