"Iuditham sororem Udonis ducis qui postmodum in Calabria sub Ottone Rufo cum multis occubuit" is named by the Annalista Saxo, which specifies that Judith had three sons "Heinricum, Udonem et Sigefridum" and three daughters (unnamed), constructed the castle "qui Herseveld dicitur" and was buried with her husband (unnamed) at Heslinge. Her birth date range is estimated from her giving birth to her eldest son in [946]. 1
Marriage Information:
Jhutta married Gf. Heinrich I "der Kahle" VON STADE, son of Lothar II VON STADE and Swanhilde. (Heinrich I "der Kahle" VON STADE died on 11 May 976.)
Sources
1 Foundations for Medieval Genealogy, Medlands, Judith.