BERTRADA [Berta] ([779/80]-11 Mar, 824 or after). "Hruodrudem et Bertham et Gislam" are named daughters of King Charles & Hildegard by Einhard[130]. Angilbert's poem Ad Pippinum Italiæ regum names (in order) "Chrodthrudis…Berta…Gisla et Theodrada" as daughters of King Charles[131]. Theodulf's poem Ad Carolum Rege changes the order slightly when he names "Berta…Chrodtrudh …Gisla…Rothaidh…Hiltrudh, Tetdrada" as daughters of the king[132]. The Chronicon Fontanellense records that Charles I King of the Franks proposed a marriage between “Offæ Rege Anglorum sive Merciorum…filiam” and “Carolus iunior”, but that King Offa refused unless “Berta filia Caroli Magni” was also married to his son which was unacceptable to the Frankish king[133]. Her father kept her and her sisters at the court of Aix-la-Chapelle refusing them permission to marry, but she was banished from court by her brother Emperor Louis I on his accession[134]. The Vita Angilberti records the relationship between "Berta filia [rex de regina Hildigarda]" and "domnus Angilbertus"[135]. The Chronicon Centulensis records that “Angilbertus” married “regis filiam Bertam” and that they had “duos filios Harnidum et Nithardum”[136]. Nithard names Bertha, daughter of King Charles, as his mother[137]. The necrology of the abbey of Saint-Denis records the death "V Id Mar" of "Berta filia Karoli imperatoris qui dedit superiorem Curtem"[138]. Mistress: (from [795]) of ANGILBERT "the Saint", son of [NITHARD & his wife Richarda] ([750]-18 Feb 814, bur Saint-Riquier, église du Saint-Sauveur et de Saint-Richard).