• Born: Oizy, Namur, Belgium
• Married: Before 1150
• Died: Between 1169 and 1171, Avesnes, Artois/Pas-de-Calais, France

  Research Notes:

The Chronicle of Alberic de Trois-Fontaines names (in order) "Nicolaum, Yvonem, Fastradum et episcopum Everardum Tornacensem" as the sons of "Galterum de Avennis" & his wife Ida. The Liber de Restauratione Sancti Martini Tornacensis names "altero filio suo [=Gualterus] Nicholao", specifying that he succeeded in "castrum Avesniense et Bracbantum". The late 13th century genealogy by Balduinus de Avennis records that "filius eius Nicolaus Plukellus" succeeded "Walterus cognomina Plukellus".

Seigneur d'Avesnes, de Condé et de Leuze. "Evrardus…Tornacensis episcopus" confirmed the donation by "Johannes advocatus Cisonii" to Cysoing, in the presence of "fratrum meorum Nicolai…de Avesnis et Gossuini advocati Tornacensis", by charter dated to [1174/86], confirmed after the donor’s death by "domna Petronilla uxor eius soror mea et Petrus supradicti Johannis frater". ¹