Robert II Curthose was the eldest son of William I the Conqueror, who took the cross and headed the Normans under his command on the First Crusade. By heading east, this prince, on the one hand, joined the movement of God's warriors that had set Europe on fire. On the other, he cultivated the family tradition, continuing the work of his grandfather Robert I, the Magnificent, who had died while returning from a pilgrimage to the Holy Land. Robert II, despite his bravery and political skills, which he had shown during the Crusades, having fulfilled his vows, did not reach for any territorial conquests during the First Crusade. During his return from the armed pilgrimage, he also lost the English crown, which, after the unexpected death of William II, was taken over by their youngest brother, who went down in history as Henry I.