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John I of Avesnes
b. 1 May 1218
d. 24 Dec 1257
Gender: Male
Father: Bouchard IV of Avesnes
Mother: Margaret II of Flanders
Spouse: Adelaide of Holland
b. Abt 1230
d. 1284
Gender: Female
Father: Floris IV of Holland
Mother: Mathilde of Brabant
John II of Avesnes

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The contents of this website represents the best estimates of its author. The information provided is based upon original research and the research and compilations of NEHGS, Gary Boyd Roberts, William Addams Reitwiesner, Leo van de Pas, Christian Settipani and others. If you believe any of the information on this site to be inaccurate, please email: