Sigfried married Flanders, COUNTESS OF GUISNES Elstrude De about 930 in Of, Guisnes, Neustria. Elstrude (daughter of old", Count of Flanders and Artois Arnold I "the and (Alice, COUNTESS OF FLANDERS Alix) De Vermandois Adèle) was born about 932 in Of, Flandres. [Group Sheet] [Family Chart]
