Foxcroft was born in
Stoke upon Tern in 1600 in Shropshire where her parents Elizabeth (born Fox) and Christopher Whichcote lived at
Whichcote Hall. Her younger brothers were
Jeremy (later Sir Jeremy) and
Benjamin Whichcote. Benjamin became the Provost of
King's College, Cambridge. She married
George Foxcroft who was later employed by the
East India Company. She became involved with the
Cambridge Platonists via
Henry More who was one of their leaders and within the group she met the philosopher
Anne Conway. When her husband left for India in 1666 she went to live at
Ragley Hall with the Conways. The two of them were of similar interests and she became Coway's companion and
amenuensis. When Henry More published his treatise
Philosophiae Teutonicae censura on the controversial Jakob Böhme it is presumed that this was for her. More surprised some by his sympathetic interpretation of Boehme's views. He noted that he was better than the Quakers and his mild criticism may have encouraged Foxgrove and Conway's defense of his work. ==Death and legacy==