Philip I of Vianden (1227-1273) (1227–1273) Parents Henry I, Count of Vianden Margaret, Marchioness of Namur Children Margaretha von Sponheim-Vianden Philipp von Vianden Godfrey I of Vianden Siblings Henry I van Vianden Yolanda of Vianden Matilda of of Požega Friedrich von Vianden Partners Marie van Perweis, Heiress of Perweis, Grimbergen et Ninove