William III Talvas Count of Alençon & Ponthieu ^{1 2}

   Other names for William were William III of Ponthieu, William Talvas Montgomery le Despencer and William Talvas Montgomery le Despencer.

  Research Notes:

From Wikipedia - William III, Count of Ponthieu :

William III of Ponthieu (c. 1095-20 June 1172), son of Robert II of Bellême and Agnes of Ponthieu . He is also called William (II; III) Talvas.

He assumed the county of Ponthieu some time before 1111, upon the death of his mother. His father escaped capture at the battle of Tinchebrai (1106); but later, as envoy for King Louis of France , he went to the English court and was arrested by King Henry of England and was never released from prison. William was naturally driven by this to oppose King Henry, and his allegiance to count Geoffrey of Anjou caused Henry to seize certain of William's castles in Normandy.

Family
His wife was Helie of Burgundy , daughter of Eudes I, Duke of Burgundy . The Gesta Normannorum Ducum says that they had five children, three sons and two daughters: Guy II is called "the eldest son", but the editors doubt this; he assumed the county of Ponthieu during his father Talvas' lifetime, but preceded him in death (Guy II died 1147; William Talvas died 1171); his daughters married Juhel, son of Walter of Mayenne , and William de Warenne, 3rd Earl of Surrey .

  Death Notes:

May have been 20 June 1172 or 30 June 1171.

William married Hélie of Burgundy, daughter of Eudes I Duke of Burgundy and Sibylle of Burgundy-Ivrea, about 1115. (Hélie of Burgundy was born about 1080 and died on 28 Feb 1141 in Abbey of Perseigne, (Neufchâtel-en-Saosnois), Maine, France.)