Jean I de AVESNES, COUNT OF FLANDERS & HAINAULT
Invalid endowment temple code: L0GAN.
Invalid seal-to-parents temple code: SLALE.
He married Aleida Countess of Holland, Countess of Avesnes Sep 1246 at Frankfort am Main, Hessen-Nassau, Prussia . Aleida Countess of Holland, Countess of Avesnes was born at of 's-Hertogenbosch, Noord-Brabant, Netherlands Abt 1226 daughter of Floris IV Count of Holland and Mathilde Princess of Brabant .
They were the parents of 7
children:
Jean II de Avesnes, Count of Holland & Hainault
born Abt 1247.
Baudouin de Avesnes
born Abt 1249.
Bouchard de Avesnes, Bishop of Metz
born 26 May 1251.
Guy de Avesnes, Bishop of Utrecht
born Abt 1253.
Guillaume de Avesnes, Bishop of Cambrai
born 1254.
Floris de Avesnes, Prince of Achaja
born 1255.
Jeanne de Avesnes, Abbess of Flines
born Abt 1256.
Jean I de Avesnes, Count of Flanders & Hainault died 24 Dec 1257 at Valenciennes, Nord, France .
Aleida Countess of Holland, Countess of Avesnes died 1/ 9 Mar/Apr 1283 at Valenciennes, Nord, France .