Family: Count of Hainaut Jean I d'Avesnes / Aleida Holland (F879)
m. Sep 1246
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Male
Count of Hainaut Jean I d'Avesnes
Birth 1 May 1218 Houffalize, Luxembourg, Belgium 
Death 24 Dec 1257 Valenciennes, Nord, Nord-Pas-de-Calais, France Burial Marriage Sep 1246 [1, 2] Frankfort on the Main, Frankfurt am Main, Hessen, Germany [1, 2] Father Lord of Avesnes Bouchard IV d'Avesnes | F877 Group Sheet Mother Countess of Hainaut Margaret II Hainaut | F877 Group Sheet
Female
Aleida Holland
Birth 1226 Herven, S-Hertogenbosch, Noord-Brabant, Netherlands Death 9 Apr 1283 Valenciennes, Nord, Nord-Pas-de-Calais, France Burial Father Florent IV Holland | F3433 Group Sheet Mother Mathilda Brabant | F3433 Group Sheet
Male
+ Count of Hainaut Jean d'Avesnes, II
Birth 1247 Leuven, Vlaams-Brabant, Belgium Death 22 Aug 1304 Valenciennes, Nord, Nord-Pas-de-Calais, France Burial Spouse Philippina Countess Luxembourg Maas | F880 Marriage 1270
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Sources - [S308] Bio Info on d'Avesnes Jean I, (Name: Wikipedia; Location: http://en.wikipedia.org/wiki/John_I_of_Avesnes;), http://en.wikipedia.org/wiki/John_I_of_Avesnes.
http://en.wikipedia.org/wiki/John_I_of_Avesnes - [S323] thePeerage.com, (Name: thePeerage.com;), d'Avesnes Jean I #003595 http://thepeerage.com/p360.htm#i3595.
- [S308] Bio Info on d'Avesnes Jean I, (Name: Wikipedia; Location: http://en.wikipedia.org/wiki/John_I_of_Avesnes;), http://en.wikipedia.org/wiki/John_I_of_Avesnes.