Gérard Bishop of Cambrai granted rights relating to the altar in the church of Lidekerke to "Radulfi cognomine Eurardi Tornacensis et Heleuuidis eiusdem uxoris" by charter dated 1092. Robert II Count of Flanders approved the donation of land “[apud] Hersiel...” made by “domini Everardi Tornacensis castellani...Gualterique eius filii” to Tournai Notre-Dame, for the souls of “sua sueque uxoris Heluidis”, by charter dated 20 Oct 1110, witnessed by “...ipsi Everardi...Gualterii filii sui, Adelardi nepotis sui...”. The wording of this document suggests that Helwide may have been alive at the time.
The necrology of Tournai Saint-Nicolas-des-Prés records the death “III Id Jul” of “Helvidis castellana”. The necrology of Tournai Cathedral records her death “6 Oct”. 1