About a fortnight after Mary's marriage, she issued a proclamation ordering the military chiefs in her kingdom to assemble at Melrose, with their followers, to accompany her on an expedition through the border country, to suppress some disorders there. The nobles considered this as only a scheme of Bothwell's to draw them away from the neighborhood of Stirling, so that he might go and get possession of the young prince. Rumors of this spread around the country, and the forces, instead of proceeding to Melrose, began to assemble in the neighborhood of Stirling, for the protection of the prince. The lords under whose banners they gathered assumed the name of _the prince's_ lords, and they called upon the people to take up arms in defense of young James's person and rights. The prince's lords soon began to concentrate their forces about Edinburgh, and Bothwell was alarmed for his safety. He had reason to fear that the governor of Edinburgh Castle was on their side, and that he might suddenly sally forth with a body of his forces down the High Street to Holyrood, and take him prisoner. He accordingly began to think it necessary to retreat. Now Bothwell had, among his other possessions, a certain castle called Borthwick Castle, a few miles south of Edinburgh. It was situated on a little swell of land in a beautiful valley. It was surrounded with groves of trees, and from the windows and walls of the castle there was an extended view over the beautiful and fertile fields of the valley. This castle was extensive and strong. It consisted of one great square tower, surrounded and protected by walls and bastions, and was approached by a draw-bridge. In the sudden emergency in which Bothwell found himself placed, this fortress seemed to be the most convenient and the surest retreat. On the 6th of June, he accordingly left Edinburgh with as large a force as he had at command, and rode rapidly across the country with the queen, and established himself at Borthwick.