Ludwig IV "der Heilige" Landgrave Of THURINGIA Ludwig IV "der Heilige" Landgrave Of was born on October 28th, 1200 in <Of, Wartburg Bei Eisenach, Sachsen-Weimar-Eisenach, Thuringia>. Ludwig IV "der Heilige" Landgrave Of's father is Hermann I, Landgrave Of THURINGIA and his mother was Sofie, Countess Of SOMMERSCHENBURG. His maternal grandfather is Friedrich, Count Palatine Of SOMMERSCHENBURG. He had four sisters named Jutte, Princess Of, Hedwig, Princess Of, Irmgard Princess Of and Agnes, Princess Of. He was the fourth oldest of the five children. He died at the age of 26 on September 11th, 1227.