Frederik I. of Walsee Nobleman of the Duchy Austria, Founder of the Family Wallsee-Drosendorf (1300–1318) Parents Eberhard of Walsee Children Henry of Wallsee-Drosendorf-Enzesfeld Eberhard of Wallsee-Drosendorf-Pottenstein Siblings Henry I. of Wallsee Konrad of Walsee Ulrich I. of Walsee Eberhard IV. von Walsee Gebhard of Walsee