Posbury Hill Fort is an unexcavated Iron Age Hill fort, located three miles from Crediton, Devon.[1] It consists today of an incomplete earthwork partly enclosing a hilltop 180 metres above sea level. A modern road cuts across the north of the hilltop.
Just to the south of the hamlet there are the remains of an early Roman road, that ran from the newly discovered Roman fort, near Colebrooke, in an eastward direction towards Crediton.
W. G. Hoskins states that this is a likely site for Posentesburg, a battle site from 661 AD in which, Wessex, the King of Cenwalh moved the native Briton tribes out of middle Devon to the coast. Today the hill fort's defences are best seen from the bridle path, just to the north of the concent.
The Anglican Franciscan nunnery occupies the original home of the Tuckfields, later the Hippisley family which was followed by the Shelleys of Shobrooke Park. In 1931 the Shelleys moved to Shobrooke, near Crediton. The nunnery was founded by a Grace Emily Costin who took the name "Mother Teresa". Gold was supposedly discovered in a tree struck by lightning.