Jean I de AVESNES
ORDINANCE-BAPT-ENDOW: International Genealogical Index; 1994 edition.
He married Aleida, Countess of Holland Sep 1246 at Frankfrt am Main, Hessen-Nassau, Prussia . Aleida, Countess of Holland 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:
Marguerite de Avesnes
born Abt 1239.
Jean II, Count of Hainaut d' Avesnes, Count of Holland
born Abt 1247.
Baudouin de Avesnes
born Abt 1249.
Bishop Bouchard de Avesnes
born 26 May 1251.
Bishop Guy de Avesnes
born Abt 1253.
Floris de Avesnes
born Abt 1255.
Jeanne de Avesnes
born Abt 1256.
Jean I de Avesnes died 24 Dec 1257 at Valenciennes, Nord, France .
Aleida, Countess of Holland died 9 Apr 1284 at Valenciennes, Nord, France .