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 Louis, Duke of Württemberg Magdalena Sibylla of Hesse-Darmstadt, and had 4 children: William Louis, Duke of Württemberg William Louis of Württemberg (7 January 1647 – 23 June 1677) was the ruler of the senior Duchy of Württemberg from 1674 until his death in 1677. William Louis was born in Stuttgart, the ninth child of Eberhard III, Duke of Württemberg, and his first wife Anna Katharina of Kyrburg. At the age of 30, the Duke died unexpectedly of a heart attack at the stop-over in Schloß Hirsau. His widow Magdalena Sibylla became regent of Württemberg between 1677 and 1693, until her son reached adulthood. He