After the marriage the Earls of Norfolk and Hereford separated to raise their forces and bring them together, when they believed they would be too strong for any force which could be raised to act against them. They counted on the unpopularity of the Normans and on the king's difficulties abroad which would prevent his return to England. The king did not return, but their other hope proved fallacious. Bishop Wulfstan of Worcester and Abbot Ethelwy of Evesham, both English prelates, with some Norman help, cut off the line of communication in the west, and Earl Roger could not force his way through. The two justiciars, William of Warenne and Richard of Bienfaite, after summoning the earls to answer in the king's court, with the aid of Bishop Odo and the Bishop of Coutances, who was also a great English baron, raised an army of English as well as Normans, and went to meet Earl Ralph, who was marching westwards. Something like a battle took place, but the rebels were easily defeated. Ralph fled back to Norwich, but it did not seem to him wise to stop there. Leaving his wife to stand a siege in the castle, he sailed off to hasten the assistance which had already been asked for from the Danes. A Danish fleet indeed appeared off the coast, but it did nothing beyond making a plundering raid in Yorkshire. Emma, the new-made wife of Earl Ralph, seems to have been a good captain and to have had a good garrison. The utmost efforts of the king's forces could not take the castle, and she at last surrendered only on favourable terms. She was allowed to retire to the continent with her forces. The terms which were granted her, as they are made known in a letter from Lanfranc to William, are especially interesting as giving us one of the earliest glimpses we have of that extensive dividing out of land to under-vassals, the process of subinfeudation, which must already have taken place on the estates granted to the king's tenants in chief. A clear distinction was made between the men who were serving Ralph because they held land of him, and those who were merely mercenaries. Ralph's vassals, although they were in arms against Ralph's lord, the king, were thought to be entitled to better terms, and they secured them more easily than those who served him for money. Ralph and Emma eventually lived out the life of a generation of those days, on Ralph's Breton estates, and perished together in the first crusade.