Monarchy of the United Kingdom which resulted in a Danish monarchy for one generation. The conquest of England in 1066 by William, Duke of Normandy, was crucial in terms of both political and social change. The new monarch continued the centralisation of power begun in the Anglo-Saxon period, while the Feudal System continued to develop. William was succeeded by two of his sons: William II, then Henry I. Henry made a controversial decision to name his daughter Matilda (his only surviving child) as his heir. Following Henry's death in 1135, one of William I's grandsons, Stephen, laid claim to the throne and took power with
Henry VI the Good a pretext they used the fact that Henry III was directly responsible for the premature death of Henry V (Henry and Bolesław III's father). In the end, Władysław I the Elbow-high managed to capture almost all of Greater Poland, but his allies only took the towns of Uraz (which was given to Henry) and Wołów and Lubiąż (granted to Bolesław III). In 1314 Henry supported his brother-in-law Frederick the Fair of Austria in the battle for the throne of Germany. The war with Głogów began again in 1321. This time, however, Henry wasn't convinced as to the appropriateness of it,