(5) In 1127 it is said in the Anglo-Saxon chronicles that King Henry I, held his court at Christmas, in Windsor. There was David King of the Scots and all the headmen that were in England, learned and lewd. There, he engaged the archbishops, bishops, abbots, earls, and all the thegns (Norman Knights and free men) that were there to swear England and Normandy, after his death, into the hands of his daughter Matilda (Athelicia).
Afterward, Matilda, who was formerly the wife of the Emperor of Saxony, was sent by Henry, to Normandy. With her went, her brother Robert, Earl of Gloucester, and Brian, son of the Earl, Alan Fergan. Henry had arranged for her to wed the son of the Earl of Anjou, named Geoffrey Martel. All the French and English however, disapproved of this, but the King needed to forge an alliance with the Earl of Anjou, in order to have help, against his nephew, William Clito, who was the son of his brother Robert, the former Earl of Normandy.
After the tragedy of the White Ship in 1120, which took the life of Henry's son, the obvious male heir to England and Normandy was now, William Clito. Henry had been successful in writing his brother out of the succession, so he was not about to hand over the 'keys to the kingdom', to his brother's son. Henry needed to secure the throne and his only option was his daughter. But a woman on the throne of England. . .? Nevertheless, the barons swore an oath to recognize Henry's daughter, Matilda, as heir to her father's kingdom.