"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