Did William I (the conqueror) die at the Siege of Mantes or at the Convent of St Gervais?

Question

Did William I (the conqueror) die at the Siege of Mantes or at the Convent of St Gervais?

Answer 1

In 1087 in France, William burned Mantes (50 km west of Paris), besieging the town. However, he fell off his horse, suffering fatal abdominal injuries by the saddle pommel. On his deathbed, William divided his succession for his sons, sparking strife between them. Despite William's reluctance, his combative elder son Robert received the Duchy of Normandy, as Robert II. William Rufus (his third son) was next English king, as William II. William's youngest son Henry received 5,000 silver pounds, which would be earmarked to buy land. He also became King Henry I of England after William II died without issue. While on his deathbed, William pardoned many of his political adversaries, including Odo. Because of the gasses in William's stomach, his body exploded when they were carrying him in the coffin.

William died at age 59 at the Convent of St Gervais near Rouen, France, on 9 September 1087. William was buried in the Abbaye-aux-Hommes, which he had erected, in Caen, Normandy.