Baron William III De Mauduit

William III was born in 1126 in Hanslope,Buckinghampshire,England.  William III's father was William II De Mauduit Baron Of Hamslepe and his mother was Maud De Hamslepe.  He was an only child.  He died at the age of 44 in 1170.

‌William III and Isabel or Adelicia were married in a religious ceremony about 1160 in Hanslope,Buckinghamshire,England.  They had a son and a daughter, named Robert and Sibil.