Research Notes:

["Hezel…palatinus comes…domni Ezzonis palatini comitis frater uterinus" donated property "in villa…Luvenich" to Köln St Gereon by charter dated 29 Sep 1033, witnessed by "…Euerhart comes…".] According to Europäische Stammtafeln, Eberhard was the son of Graf Fretherhard... but the primary source which confirms this has not yet been identified. ¹