ELISABETH de Béthune (-before 1300). The existence of younger daughter(s) of Robert de Béthune is indicated by the charter dated Oct 1245 under which [her father] “Robers advoez d’Arras et sires de Bethune” refers to “mon aisné hoir Mehault me fille”[436]. The late 13th century genealogy by Balduinus de Avennis records that "Hellins [de Waurin]...frere [dou seneschal Robert]” married “la fille lauoé Robert de Betune” and had “ii filles”[437]. The late 13th century genealogy by Balduinus de Avennis records that “secundus filius domini Hugonis de Antoing, Hugo” married secondly "filiam advocati Bethuniæ Roberti, relictam domini Hellini de Waurin"[438]. Brassart states that "Isabeau de Béthune fille de Robert sire de Béthune et de Termonde et d’Isabeau de Moreaumez" was “veuve, avec enfants, de Jean de Steelant avoué d’Usse” when she married Hélie de Wavrin, but he does not cite the primary source on which this statement is based[439]. m firstly JEAN de Steelant avoué d’Usse, son of ---. m secondly HELIE [V] de Wavrin Seigneur de Harponlieu, son of HELIE [IV] de Wavrin & his wife Isabelle de Montmirail (-after Jan 1246). m thirdly (before 1284) as his second wife, HUGUES [III] Seigneur d’Antoing et d’Epinoy, son of HUGUES [II] Seigneur d’Antoing et d’Epinoy & his first wife Philippa de Harnes (-[1310])