Henry I of England and Matilda were in Anjou supporting the rebels in their campaign against the royal army, which included a number of Matilda's supporters such as Robert of Gloucester. Many of these barons had taken an oath to stay in Normandy until the late king was properly buried, which prevented them from returning to England. The Norman nobility discussed declaring Theobald of Blois king. Theobald's younger brother, Stephen of Blois, quickly crossed from Boulogne to England, however, accompanied by his military household. With the help of his brother, Henry of Blois, he seized power in England and was crowned king on 22
Norman conquest of England Mercia, fighting Norman forces based in Hereford. These events forced William to return to England at the end of 1067. In 1068 William besieged rebels in Exeter, including Harold's mother Gytha, and after suffering heavy losses managed to negotiate the town's surrender. In May, William's wife Matilda was crowned queen at Westminster, an important symbol of William's growing international stature. Later in the year Edwin and Morcar raised a revolt in Mercia with Welsh assistance, while Gospatric, the newly appointed Earl of Northumbria, led a rising in Northumbria, which had not yet been occupied by the Normans. These rebellions rapidly