Charles' officers continued the survey of the counts' rights and revenues in Provence, provoking a new rebellion during his absence. On his return he applied both diplomacy and military force to deal with them. The Archbishop of Arles and the Bishop of Digne ceded their secular rights in the two towns to Charles in 1250. He received military assistance from his brother, Alphonse. Arles was the first town to surrender to them in April 1251. In May they forced Avignon to acknowledge their joint rule. A month later Barral of Baux also capitulated. Marseilles was the only town to resist for several months, but it also sought peace in July 1252. Its burghers acknowledged Charles as their lord, but retained their self-governing bodies.