William's grave is currently marked by a marble slab with a Latin inscription dating from the early 19th century. The tomb has been disturbed several times since 1087, the first time in 1522 when the grave was opened on orders from the papacy. The intact body was restored to the tomb at that time, but in 1562, during the French Wars of Religion, the grave was reopened and the bones scattered and lost, with the exception of one thigh bone. This lone relic was reburied in 1642 with a new marker, which was replaced 100 years later with a more elaborate monument. This tomb was again destroyed during the French Revolution but was eventually replaced with the current marker.
