Aleida de Hainaut (1292-1351) (1292–1351) Parents Ymsoete (?) John I of Hainaut Children Wolfert III van Borselen Siblings Simon Heer van Bruelis Alice of Hainault Willem Cuser John of Beaumont Jan van Oostervant Isabelle of Avesnes Marguerite d'Avesnes William I, Count of Hainaut Mary of Avesnes Partners Wolfert II van Borselen Otto III van Buren