Jean I De Avesnes & Aleida Countess Of Holland 
Jean I and Aleida Countess Of were married in a religious ceremony in 1246 in Prussia. They had a son named Jean II , Count Of Hainault.
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Personal Details
Jean I De Avesnes
Jean I was born in April 1218 in Houffalize,Luxembourg,BELGIUM. He died at the age of 39 on December 24th, 1257 in Valenciennes,Nord,FRANCE.
Aleida Countess Of Holland
Aleida Countess Of was born in 1226 in Hertogenbo,Noord Brabant,NETHERLANDS. She died at the age of 57 on April 9th, 1283 in Valenciennes,Nord,FRANCE.
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Children
Jean II , Count Of Hainault De Avesnes
Jean II , Count Of Hainault was born in 1247 in Brabant,Brabant,BELGIUM.1 He died at the age of 57 on August 22nd, 1304 in Valenciennes,Nord,FRANCE.