Kind(eren):
ARNOUT [V] van Diest (-after Jan 1254). The primary source which confirms his parentage has not yet been identified. "Arnoldus dominus de Diest" founded "prope Beghinas Sanctæ Catharinæ ad Campum infra limites parochiæ de Webbecum" by charter dated Jan 1254[712].
[712] Miraeus (1723), Tome I, Notitia Ecclesiarum Belgii, CXCV, p. 768.
Bron: http://fmg.ac/Projects/MedLands/BRABANT,%20LOUVAIN.htm#_Toc329756995
Volgens Zelem - De Vroege en Hoge Middeleeuwen (ca. 650 n. C 1270 n. C) (http://www.vilters-vanhemel.be/zelem_historisch_middeleeuwen1.html) is
Arnold V dezelfde persoon als Arnold IV.
http://fmg.ac/Projects/MedLands/BRABANT,%20LOUVAIN.htm#_Toc329756995