Lucia-Mahaut
Encyclopedia
Lucia-Mahaut of Blois known as Matilda or Maud(1), was daughter to Stephen, Count of Blois and Adela of Normandy
Adela of Normandy
Adela of Normandy also known as Adela of Blois and Adela of England was, by marriage, Countess of Blois, Chartres, and Meaux. She was a daughter of William the Conqueror and Matilda of Flanders...

. She was married to Richard d'Avranches, 2nd Earl of Chester
Richard d'Avranches, 2nd Earl of Chester
Richard d'Avranches, 2nd Earl of Chester was the son of Hugh, 1st Earl of Chester and Ermentrude of Clermont.-Early life:...

. Both she and her husband joined William Adelin
William Adelin
William , surnamed Adelin , was the son of Henry I of England by his wife Matilda of Scotland, and was thus heir-apparent to the throne. His early death without issue caused a succession crisis.William was born in Winchester...

, heir to King Henry I of England
Henry I of England
Henry I was the fourth son of William I of England. He succeeded his elder brother William II as King of England in 1100 and defeated his eldest brother, Robert Curthose, to become Duke of Normandy in 1106...

 aboard the White Ship
White Ship
The White Ship was a vessel that sank in the English Channel near the Normandy coast off Barfleur, on 25 November 1120. Only one of those aboard survived. Those who drowned included William Adelin, the only surviving legitimate son and heir of King Henry I of England...

. The ship struck a rock and sank, drowning all but one person, including Lucia-Mahaut, on 25 November 1120.
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