own coins. The royal forest law had collapsed in large parts of the country. Some parts of the country, though, were barely touched by the conflict—for example, Stephen's lands in the south-east and the Angevin heartlands around Gloucester and Bristol were largely unaffected, and David I ruled his territories in the north of England effectively. Stephen's overall income from his estates, however, declined seriously during the conflict, particularly after 1141, and royal control over the minting of new coins remained limited outside of the south-east and East Anglia. With Stephen often based in the south-east, increasingly Westminster, rather than the older site of Winchester, was used as the centre of royal government. The character of the conflict in England gradually began to shift; as historian Frank Barlow suggests, by the late 1140s "the civil war was over", barring the occasional outbreak of fighting. In 1147 Robert of Gloucester died peacefully, and the next year the Empress Matilda left south-west England for Normandy, both of which contributed to reducing the tempo of the war. The Second Crusade was announced, and many Angevin supporters, including Waleran of Beaumont, joined it, leaving the region for several years. Many of the barons were making individual peace agreements with each other to secure their lands and war gains. Geoffrey and Matilda's son, the future King Henry II of England, mounted a small mercenary invasion of England in 1147 but the expedition failed, not least because Henry lacked the funds to pay his men. Surprisingly, Stephen himself ended up paying their costs, allowing Henry to return home safely; his reasons for doing so are unclear. One potential explanation is his general courtesy to a member of his extended family; another is that he was starting to consider how to end the war peacefully, and saw this as a way of building a relationship with Henry. The young Henry FitzEmpress returned to England again in 1149, this time planning to form a northern alliance with Ranulf of Chester. The Angevin plan involved Ranulf agreeing to give up his claim to Carlisle, held by the Scots, in return for being given the rights to the whole of the Honour of Lancaster; Ranulf would give homage to both David and Henry FitzEmpress, with Henry having seniority. Following this peace agreement, Henry and Ranulf agreed to attack York, probably with help from the Scots. Stephen marched rapidly north to York