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The eldest son, John I of Avesnes, who was uneasy about his rights, convinced William of Holland, the German king recognized by the pro-papal forces, to seize Hainaut and the parts of Flanders which were within the bounds of the empire. William of Holland was theoretically, as king, overlord for these territories, and also John's brother-in-law.
John of Avesnes (1 May 1218 – 24 December 1257) was the count of Hainaut from 1246 to his death. Life. Born in Houffalize, John was the eldest son of Margaret II of Flanders by her first husband, Bouchard IV of Avesnes. [1] . As the marriage of Margaret and Bouchard was papally dissolved, he was considered illegitimate [citation needed] .
John I of Châtillon (died 5 May 1280 in Chambord), was count of Blois from 1241 to 1280 and lord of Avesnes.
According to Wikipedia: John of Avesnes (1 May 1218 - 24 December 1257) was the count of Hainaut from 1246 to his death. Life. Born in Houffalize, he was the eldest son of Margaret II of Flanders by her first husband, Bouchard IV of Avesnes. [1]
Découvrez gratuitement l'arbre généalogique de John I Of Avesnes pour tout savoir sur ses origines et son histoire familiale.
Nov 2, 2023 · Wikipedia_EN. and in French: http://fr.wikipedia.org/wiki/Jean_Ier_de_Hainaut. John II of Avesnes (1247 – August 22, 1304) was the oldest son of John I of Avesnes and Adelaide of Holland. John II was Count of Hainaut from 1280 to his death, succeeding his grandmother, Margaret II.
Jean Jan I Johannes, Jan de Avesnes (Avesnes) aka van Avesnes, d'Avesnes (1 May 1218 - 24 Dec 1257)
