Olivier de Mesle

OLIVIER de Mesle

From Medlands:

http://fmg.ac/Projects/MedLands/NORMAN%20NOBILITY.htm#GuillaumeBell...

Guillaume [II] had one illegitimate child by an unknown mistress:

c) OLIVIER de Mesle (-after 28 May 1053). Guillaume de Jumièges names Oliver as brother of Arnoul, recording that he was suspected of murdering his brother and later became a monk at Bec[135]. It is assumed that he was illegitimate as the same source in another passage names the two children of Guillaume [II] by his first wife. Yves Bishop of Sées confirmed the sale of the church of Courgains, with the consent of "fratre episcopi Willelmo, et Oliverio et Warino et Rodulfo episcopi nepotibus", by charter dated 28 May 1053[136]. A later charter of Abbé Avesgaud summarises the sale, stating that it was made with the consent of "episcopi Sagiensis, Ivonis nomine, et Willelmi fratris predicti Sagiensis episcopi…etiam Warino et Willelmo filiis Roberti, Olivario Willelmi filio, Radulfi filio Warini, et Seginfredo filio Willelmi de Bellisimo"[137]. He left descendants known as "Oison"[138], but the primary source which confirms their existence has not yet been identified.