France. This was unacceptable; the Scots instead formed an alliance with France. The Comyn-dominated council acting in the name of King John summoned the Scottish host to meet at Caddonlee on 11 March. The Bruces and the earls of Angus and March refused, and the Bruce family withdrew temporarily from Scotland, while the Comyns seized their estates in Annandale and Carrick, granting them to John Comyn, Earl of Buchan. Edward I thereupon provided a safe refuge for the Bruces, having appointed the Lord of Annandale to the command of Carlisle Castle in October 1295. At some point in early 1296, Robert married his first wife, Isabella of Mar, the daughter of Domhnall I, Earl of Mar. Isabella died shortly after their marriage, either during or shortly after the birth of their only child, Marjorie Bruce. Beginning of the Wars of Independence Almost the first blow in the war between Scotland and England was a direct attack on the Bruces. On 26 March 1296, Easter Monday, seven Scottish earls made a surprise attack on the walled city of Carlisle, which was not so much an attack against England as the Comyn Earl of Buchan and their faction attacking their Bruce enemies. Both his father and grandfather were at one time Governors of the Castle, and following the loss of Annandale to Comyn in 1295, it was their principal residence. Robert Bruce would have gained first-hand knowledge of the city's defences. The next time Carlisle was besieged, in 1315, Robert the Bruce would be leading the attack. Edward I responded to King John's alliance with France and the attack on Carlisle by invading Scotland at the end of March 1296 and taking the town of Berwick in a particularly bloody attack upon the flimsy palisades. At the Battle of Dunbar, Scottish resistance was effectively crushed. Edward deposed King John, placed him in the Tower of London, and installed Englishmen to govern the country. The campaign had been very successful, but the English triumph would be only temporary. Although the Bruces were by now back in possession of Annandale and Carrick, in August 1296 Robert Bruce, Lord of Annandale, and his son, Robert Bruce, Earl of Carrick and future king, were among the more than 1,500 Scots at Berwick who swore an oath of fealty to King Edward I of England. When the Scottish revolt against Edward I broke out in July 1297,