Oxford DNB online, 13 Aug. 2008 (Margaret Fell, née Askew; Quaker leader; born 1614 at Marsh Grange, near Dalton in Furness, Lancashire; married Thomas Fell of Swarthmoor Hall in 1632; second marriage to George Fox in 1669; died 23 Apr. 1702)
Quakers in Britain Library online cat., 13 Aug. 2008 (hdg.: Fell, Margaret, 1614-1702; ref.: Fox, Margaret Askew Fell, 1614-1702)
Wikipedia, 13 Aug. 2008 (Margaret Fell or Margaret Fox, 1614-23 Apr. 1702, was one of the founding members of the Religious Society of Friends, and was popularly known as the "mother of Quakerism")