Answer
Godfrey of Bouillon inherited the Lordship of Bouillon from his mother, Ida of Boulogne. Ida was the great-granddaughter of Godfrey I, Count of Verdun, who was the younger brother of Godfrey II, Duke of Lower Lorraine. Ida's inheritance made Godfrey of Bouillon a powerful lord in the region and provided him with a strong base of support for his future endeavors, including the First Crusade.