Waltrude was the daughter to the Princess St Bertille, elder sister to St Aldegondes and wife to Madelgaire, Count of Hainault and one of the principal Lords of King Dagobert’s Court. After bearing him two sons and two daughters, she induced him to embrace the monastic state at Haumont, taking the name of Vincent. He is honoured in Flanders among the Saints on the 20 September and called...