Complex sentence: Margaret Fell or Margaret Fox (1614--23 April 1702), a founder of the Religious Society of Friends, known popularly as the "mother of Quakerism", is considered one of the Valiant Sixty early Quaker preachers and missionaries.
Split into simpler sentences: Margaret Fell or Margaret Fox (1614--23 April 1702) was a founder of the Religious Society of Friends. Known popularly as the "mother of Quakerism", she is considered one of the Valiant Sixty early Quaker preachers and missionaries.