Descendancy Chart:
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1- Marriage Type unknown
Number of Children: 1 Jan Ivan Avesnes (I11899) Birth April 1218 -- Houffalize
Death 24 December 1257 (Age 39) -- Valenciennes
1 . 1- Civil Marriage 25 October 1246
Aleidavan Holland (I11895) Birth after 1228 17 31
Death 1284 (Age 56) -- Valciennes
Number of Children: 2