" The White Ship (French: la Blanche-Nef; Medieval Latin: Candida navis) was a vessel transporting many nobles, including the heir to the English throne, that sank in the Channel during a trip from France to England near the Normandy coast off Barfleur, on 25 November 1120. Only one of approximately 300 people aboard survived, a butcher from Rouen.[1] Those who drowned included William Adelin, the only legitimate son and heir of Henry I of England, his half-sister Matilda of Perche, his half-brother Richard of Lincoln, the earl of Chester Richard d'Avranches, and Geoffrey Ridel.
William Adelin's death led to a succession crisis and a period of civil war in England from 1135 to 1153 known as the Anarchy. "

William Ætheling (Middle English: [ˈwiliəm ˈaðəliŋɡ], Old English: [ˈæðeliŋɡ]; 5 August 1103 – 25 November 1120), commonly called Adelin (sometimes Adelinus, Adelingus, A(u)delin or other Latinised Norman-French variants of Ætheling)[a] was the son of Henry I of England by his wife Matilda of Scotland, and was thus heir apparent to the English throne. His early death without issue caused a succession crisis, now known in English history as the Anarchy.

" Roger was originally priest of a small chapel near Caen in Normandy. He was called "Roger, priest of the church of Avranches", in his notification of election to the bishopric.[1] The future King Henry I, who happened to hear mass there one day, was impressed by the speed with which Roger read the service and enrolled him in his own service. "