Hij is getrouwd met Beatrice van d'Ath.
Zij zijn getrouwd
Kind(eren):
ARNOUL de Hainaut, son of BAUDOUIN II Comte de Hainaut & his wife Ida de Louvain ([1090]-after 1117). The Chronicon Lætiense names "Arnulpho, fratri comitis de Hainau Balduini" and his wife "Beatricem filiam [Waltero de Aat] et Ade [filiam] Eustacii del Rues"[288]. The Chronicon Hanoniense names "primogenitus Balduinus…secundus Arnulphus" as sons of "Balduino comiti Hanoniensi"[289]. Otbert Bishop of Liège declared having bought "castellum de Covino" from "comite Balduino de Mont", in the presence of "uxore ipsius Ida, cum filiis suis Baldewino, Arnulpho, Lodewico, Heinrico", by charter dated 14 Jun 1096[290]. A charter dated 1117 records the donation by "comite Balduino", with the consent of "uxore sua Iola et filio suo Balduino…prefati comites fratres Ernulfus et Willelmus", of "allodium de Oberceiis" to the abbey of Saint-Denis en Broqueroie[291].
m BEATRIX de Ath, daughter of WALTER de Ath & his wife Ada de Ramerupt. The Chronicon Lætiense names "Arnulpho, fratri comitis de Hainau Balduini" and his wife "Beatricem filiam [Waltero de Aat] et Ade [filiam] Eustacii del Rues"[292]. The Genealogiæ Scriptoris Fusniacensis refers to "Guidonem [de Guisia] qui habuit sororem" whose husband was "Arnulfo, fratre Balduini comitis Hainonensis"[293], Guy de Guise being the son of Ada de Ramerupt by her first husband Geoffroy Seigneur de Guise while Beatrix was her daughter by her second husband.
Arnoul & his wife had two children:
EUSTACHE [I] ([after 1115]-[Acre] [1191/92]).
ADA (-before 1176).
Bronnen:
[288] Chronicon Lætiense 3, MGH SS XIV, p. 494.
[289] Gisleberti Chronicon Hanoniense, MGH SS XXI, p. 505.
[290] Couvin, 1, p. 2.
[291] Duvivier (1903), 9, p. 24.
[292] Chronicon Lætiense 4, MGH SS XIV, p. 494.
[293] Genealogiæ Scriptoris Fusniacensis 17, MGH SS XIII, p. 255.
https://fmg.ac/Projects/MedLands/HAINAUT.htm#ArnouldHainautRoeulxB