The success of the Cameronians at Loudon Hill induced a considerable number of the moderate Presbyterians to join the army of the insurgents. But though increased numbers gave the revolt a more formidable appearance, they cannot be said to have added much to the strength of the rebels, since there was no concert between the two factions, each having its own set of officers, and issuing contrary orders at the same time. An army of ten thousand men under the Duke of Monmouth advanced from Edinburgh against these distracted allies, who, in all not more than four thousand, were encamped near Hamilton, on the western side of the Clyde, and had possession of the bridge between that point and the village of Bothwell. While the Duke was preparing to force a passage, the more moderate of the Whigs offered terms, and while they were debating the Duke's reply, the Cameronians, who bravely defended the bridge, were compelled to abandon their post. The Duke's army then crossed the river without opposition, because the rebels were at that juncture occupied with cashiering their officers and electing new ones. The first discharge of Monmouth's cannon caused the cavalry of the Covenanters to wheel about, and their flight threw the foot into irrecoverable disorder. Four hundred of the rebels were killed, and a body of twelve hundred surrendered at discretion, and were preserved from death by the clemency of the Duke. This action took place on the 22d of June, 1679. Scott informs us that there were two Gordons of Earlstoun engaged in the rebellion, a father and son. The former was not in the battle, but was met hastening to it by English dragoons, and was killed on his refusing to surrender. The son, who is supposed to be the person mentioned in the ballad, was of the milder Presbyterians, and fought only for freedom of conscience and relief from the tyrannical laws against non-conformists. He escaped from the battle, and after being several times condemned to die, was finally set at liberty, and restored to his forfeited estates. In this ballad Claverhouse's unsparing pursuit of the fugitives is imputed to a desire to revenge the death of his kinsman at Loudon Hill, and his anger at being thwarted is, with great simplicity, asserted to have led to the execution of Monmouth. Scott's copy of this ballad was given from recitation. In the First Series of Laing's _Fugitive Scottish Poetry_, there is an amusingly prosaic Covenanting ditty upon this subject, called _Bothwell Lines_, and in the Second Series, a Cavalier song, entitled The _Battell of Bodwell Bridge, or The Kings Cavileers Triumph_. "O, billie, billie, bonny billie, Will ye go to the wood wi' me? We'll ca' our horse hame masterless, An' gar them trow slain men are we." "O no, O no!" says Earlstoun, 5 "For that's the thing that mauna be; For I am sworn to Bothwell Hill, Where I maun either gae or die."