Kupper refers to the Catalogus codicum hagiographicorum Bibliothecae regiae bruxellensis, Part I, Vol. 2 p.486 (1008-1012)
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Gestorum Abbatem Trudonensium Continuatio Tertia: Camille de Bormans ed. and trans. Chronique de l'abbaye de Saint-Trond; Dutch translation by Lavigne, Kroniek van de abdij van Sint-Truiden. (Monumenta Germaniae Historica edition, SS X, p.382 ff is less complete for these passages.)
Gestorum Abbatem Trudonensium Continuatio Tertia: Camille de Bormans ed. and trans. Chronique de l'abbaye de Saint-Trond; Dutch translation by Lavigne, Kroniek van de abdij van Sint-Truiden. (Monumenta Germaniae Historica edition, SS X, p.382 ff is less complete for these passages.)
Gestorum Abbatem Trudonensium Continuatio Tertia 1007, MGH SS X, p.382
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Gestorum Abbatem Trudonensium Continuatio Tertia: Camille de Bormans ed. and trans. Chronique de l'abbaye de Saint-Trond; Dutch translation by Lavigne, Kroniek van de abdij van Sint-Truiden. (Monumenta Germaniae Historica edition, SS X, p.382 ff is less complete for these passages.)
Gestorum Abbatem Trudonensium Continuatio Tertia: Camille de Bormans ed. and trans. Chronique de l'abbaye de Saint-Trond; Dutch translation by Lavigne, Kroniek van de abdij van Sint-Truiden. (Monumenta Germaniae Historica edition, SS X, p.382 ff is less complete for these passages.)
That bishop Balderic II of Liège had common ancestry with Count Arnoul, who modern historians believe to mean Arnoul of Valenciennes, grandson of Nevelong, is mentioned in his biography the Vita Balderici Ep. Leodensislink. That bishop Balderic II had common ancestry with Lambert Count of Louvain is stated in the Gesta episcoporum Cameracensium, lib. III, ch. 5, M.G.H., SS., t. vii, p. 467-468.