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
Treaty of Alton Treaty of Alton The Treaty of Alton was an agreement signed in 1101 between Henry I of England and his older brother Robert, Duke of Normandy in which Robert agreed to recognize Henry as king of England in exchange for a yearly stipend and other concessions. The agreement temporarily ended a crisis in the succession of the Anglo-Norman kings. The previous year, Henry had seized the throne on the death of his brother William II, even though Robert had been William's acknowledged heir. Robert's absence in the First Crusade at the time of William's death, as well as his poor