William de Pacy

  '''William (Guillaume) de Pacy'''

From Medlands:

http://fmg.ac/Projects/MedLands/ENGLISH%20NOBILITY%20MEDIEVAL.htm#E...

GUILLAUME (-1153). He succeeded his father as Seigneur de Pacy. Orderic Vitalis records that he attacked Breteuil[192], which had been given to Raoul de Gaël. Robert of Torigny records the death in 1153 "sine liberis" of "Willermo de Paccio" and states that the castle of Pacy passed to "Roberto filio Roberti comitis Legecestriæ"[193].