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Male William III de Courcy , Sir Click to view William III de Courcy , Sir in the family tree

William III de was born before 1131 in Newenham, Oxfordshire, England.  William III de's father was William II de Courcy , Sir and his mother was Avice le Meschin , Heiress of Rougemont.  His paternal grandparents were William I de Courcy , Sewer of Henry I, Sir and Emma de Falaise; his maternal grandparents were William le Meschin , Lord of Copeland and Cecily de Rumilly , Heiress Skipton & Harewood. He had a half-sister named Alice.  He died before 1155.


William III de's first family with Maud Dame du Avranches , Heiress of Okehampton/Sap

‌William III de and Maud Dame du were married in a religious ceremony before 1150 in 2nd wife 1st husband.  They had a daughter named Hawise de.


William III de's second family with Gundred de Warenne


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