The Vita Adelheidis names "Heinrici magnifici ducis et Adhelberonis Metensis episcopi, Friderici ducis fratrumque suorum" as grandsons of "Irminthrudis", daughter of Megingoz. One version of the Genealogica Comitum Flandriæ names "...Fredericus dux Lotharingie..." as one of the brothers of Ogive when recording her marriage. Avocat of Stavelot: an undated charter, recording the meeting in May 1033 at Deville between Emperor Konrad III and Henri I King of France, records “super bono sancti Remacli [=Stablo]...comite Frederico” [brother of “comite Heinrico”, so identified as Friedrich/Frédéric de Luxembourg]. "…Friderico comite eiusque fratribus, Gisilberto et Theoderico…" were among the witnesses of the testament dated 12 Nov 1036 left by "Adalbero…prepositus S Paulini Treuerensis, dominus de Ruscheio, de Serico, de Sarburch et de Berincastel", who was their paternal uncle.
He was installed by Heinrich III King of Germany as FREDERIC Duke of Lower Lotharingia: the Herimanni Augiensis Chronicon records in 1046 that “Fridericus frater Heinrici ducis Baioariæ” was installed as “dux Lotharingorum” in place of “Gotefridi fratre ignavo Gozzilone”. The Annales Altahenses record in 1046 that the duchy was removed from "Gozziloni" and granted to "Friderico, Baioariæ ducis fratri". Emperor Heinrich III donated property “in villa Apinis [Epen] in comitatu Friderici ducis in pago Maselant” to Kloster Burtscheid by charter dated 11 Jul 1056. Ekkehard´s Chronicon Wirziburgense records that “Fridericus et fratres eius” attacked “Germaniæ partibus...contra imperium Romanum” but were defeated by “Agnete imperatoris et principibus regni”, dated to 1057. “Fredericus...Lothariencium dux” donated a serf to Saint-Trond by charter dated 1059, witnessed by “Gisleberti de Orcismunt, Ottonis advocati et fratris eius Emmonis comitis de Los, Alberti comitis de Musal”. Bernold´s Chronicon records in 1059 that “Fridericus et fratres eius de Glichberga” rebelled against “Heinrico regi”. “Advocati ducis Friderici, subadvocati comitis Ottonis...” witnessed the charter dated 1060 under which Alberon Bishop of Metz confirmed his predecessors donations to Saint-Trond.
A charter dated 30 Aug 1067 records that "Dux Fredericus et Stabulensis advocatus" donated “ecclesiam de Sprimont et allodium...Genape” to Stablo abbey, after the death of “Gerberga uxore mea” from whom was derived his rights to the property[121]. The burials of Frédéric and his first wife Gerberge are confirmed by a charter of Stablo dated 30 Aug 1067. 1
Research Notes: