Ives I de Belesme was a powerful Norman Baron, controlling the lands and tower of Belesme, Normandy at the end of the 10th Century.
In documents he goes by various names: Ives de Creil, Ives de Belesme, Evas, etc. Apparently, his original name was Ives de Creil, but because of his land holdings he became known as Belesme. He was described as a wise man.
He is also apparently the brother or brother-in-law to Sigenfroi, the Bishop of Mans.
His parentage is in dispute. On the Internet one finds several parents, and none of them have been confirmed. Therefore it is generally considered that the House of Belesme stems from him.
In 942 his counsel saved the life of Richard, Duke of Normandy, who was imprisoned by King Louis d'Outremer at Laon.
His death date is unknown, though various documents and events place it between 994 and 1005 AD.
Ives apparently gave land to a man named Gauzlin, the abbot of Fleury, who did not rise to that position until 1005.
Belesme also founded the chapel l'Abbayette on 12 Oct 997 according to documentation.
A man named Guillaume de Jumieges wrote about Ives, referring to his full name as Yovon pere de Guillaume de Belesme. He married a woman named Godchilda (or a variation of that name) and had five known children: Guillaume de Belleme (a.k.a. William), Ives, Avesgaud (who later became Bishop of Mans), Hildeburgis, and Godchilda.