William the Conqueror eldest son. William was the son of the unmarried Robert I, Duke of Normandy, by Robert's mistress Herleva. His illegitimate status and his youth caused some difficulties for him after he succeeded his father, as did the anarchy that plagued the first years of his rule. During his childhood and adolescence, members of the Norman aristocracy battled each other, both for control of the child duke and for their own ends. In 1047 William was able to quash a rebellion and begin to establish his authority over the duchy, a process that was not complete until about 1060. His marriage
William II, Duke of Brunswick-Lüneburg daughter of Duke Eric II of Saxe-Lauenburg. William II, Duke of Brunswick-Lüneburg William II, Duke of Brunswick-Lüneburg (about 1300 – 1369) was the Prince of Lüneburg from 1330 to 1369. William was born around the year 1300 as the fourth child of Otto the Strict and his wife, Matilda of Bavaria.<br> On his father's death, William took over the reins of state jointly with his brother Otto III. This was against his father's will because Otto II had wanted the state to be divided after his death. The focus of the brothers' reign in the early years was the territorial