Stephen, King of England Robert of Gloucester rebelled against the King, starting the descent into civil war in England. An illegitimate son of Henry I and the half-brother of the Empress Matilda, Robert was one of the most powerful Anglo-Norman barons, controlling estates in Normandy as well as the Earldom of Gloucester. He was known for his qualities as a statesman, his military experience, and leadership ability. Robert had tried to convince Theobald to take the throne in 1135; he did not attend Stephen's first court in 1136 and it took several summons to convince him to attend court at Oxford later that year.
Norman conquest of England Count of Penthièvre. In August or September 1069 a large fleet sent by Sweyn II of Denmark arrived off the coast of England, sparking a new wave of rebellions across the country. After abortive raids in the south, the Danes joined forces with a new Northumbrian uprising, which was also joined by Edgar, Gospatric and the other exiles from Scotland as well as Waltheof. The combined Danish and English forces defeated the Norman garrison at York, seized the castles and took control of Northumbria, although a raid into Lincolnshire led by Edgar was defeated by the Norman garrison of Lincoln.