Investigation Summary
Mortemer Abbey, a 12th-century Cistercian ruin in Normandy, is known in folklore for its "White Lady" — popularly linked to Empress Matilda — and for ghostly monks said to haunt the ruins after the Revolution. These are traditional legends and visitor testimony, not documented events. Recorded by PRN as a reported/folkloric case — historical context, not proof.
Photo: pimdip, Public domain, via Wikimedia Commons