He appears as a villian in the Life of Deicolus, which says he repudiated his wife Adelinda, mingled with whores, then married a nun from Ernstein (Hummer, 235).

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http://fmg.ac/Projects/MedLands/ALSACE.htm#_Toc224541222

1. HUGO [IV] . “Huc quondam comes” exchanged property with Weissenburg monastery by charter dated 2 Sep [821/22], subscribed by “Etih, Lantberti com, Ruadberti, Gerolti com, Uitoni com, Adadramno com, Rorione com, Ingiberti com, Gundharti com, Eggiharti com, Adalberti comite stabuli…”[85]. 2. EBERHARD [III] (-after 898). The Gesta Francorum records that "Notingum episcopum et Eburhardum comitum, missos Hludowici nepotis sui [regis]" were "received and heard" at a council held in Feb 858 at Ulm[85]. The Annales Fuldenses also name "Notingum episcopum et Eburhardum comitem" as missi of "Hludowici nepotis sui" at a council "in villa Alemanniæ Ulma" in Feb 858[86]. Graf im Nordgau 888. "Arnolfus…rex" granted property "in pago Mortunouua…in comitatu Ebarhardi in locis Ouuanheim et Baldanheim" to "prespitero…Isanpreht" by charter dated 26 May 888[87]. Graf im oberen Aargau 891. "Arnolfus…rex" granted property "in comitatu Eburhardi in superiore Argowe…in loco Bach" to the church of Strasbourg by charter dated 22 Apr 892[88]. Arnulf King of Gemany confirmed grants of property "in superiori Aragouue in comitatu Hebarhardi" to St Gallen by "nobilis matrona Pirin" by charter dated 26 Aug 894[89]. m ADELINDA, daughter of ---. The primary source which confirms her marriage has not yet been identified.

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http://mauriceboddy.org.uk/Nordgau.htm

-------------------- Captured by Norsemen and ransomed by his mother. -------------------- From http://www.rpi.edu/~holmes/Hobbies/Genealogy/ps09/ps09_203.htm

Captured by Norsemen and ransomed by his mother.

References: [RFC]