Ulrich I, Duke of Mecklenburg-Stargard Duke of Mecklenburg-Stargard (1382–1417) Parents John I, Duke of Mecklenburg-Stargard Agnes of Lindau-Ruppin Children Henry, Duke of Mecklenburg-Stargard Albert II, Duke of Mecklenburg-Stargard Siblings Anna of Mecklenburg-Stargard Albert I, Duke of Mecklenburg-Stargard John II, Duke of Mecklenburg-Stargard Rudolf of Mecklenburg-Stargard John IV of Werle Matilda of Werle-Goldberg Agnes of Werle Partners Marguerite de Poméranie-Stettin