Sigramnus DE HESBAYE
The Gesta Episcoporum Mettensis names "Chrodegangus antistes…ex pago Hasbaniensi oriundus, patre Sigramno, matre Landrada, Francorum ex genere primæ nobilitatis progenitus" as Bishop of Metz. The charter dated 25 May 765 under which her son "Grodegangus…archiepiscopus" [son of Sigramnus and Landrada] donated property "in pago Wormacensi…[et] in villa Dagosbesher…in Hostoven, Burdus, in villa Flamersheim ecclesiam" to Gorze, with the consent of "Pipini…Francorum regis, avunculi mei". The supposed affiliation of Landrada is suggested by Settipani who quotes an Aquitaine necrology which lists "Willelmus…pater eius Theodericus, mater Aldana soror Hiltrudis et Landradæ".... [The] evidence of the 25 May 765 charter suggests that Settipani’s hypothesis may be correct. Sigramnus & his wife had two children. 1
Sigramnus married Landrada NIBELUNG, daughter of Charles "Martel" NIBELUNG and Chrotrudis DE TRÈVES Duchess of Austrasia. (Landrada NIBELUNG died on an unknown date.)
Foundation for Medieval Genealogy, http://fmg.ac/Projects/MedLands/FRANKISH%20NOBILITY.htm#SigramnusMLandrada.