1101, c. July 15
Following William Rufus's death, Robert Curthose, Duke of Normandy attempted to take the English throne from his youngest brother, Henry I, landing at Portsmouth in c. July,1101, but failing to secure the crown and signed the Treaty of Alton surrendering his claim and agreeing that if either brother died without an heir, the other would inherit the land. He was ultimately defeated by his brothers' Henry military and political maneuvers.
