During his proud career, a marriage with Katherine, the daughter of William Duke of Hamilton, a lady of great prudence, and of eminent piety and virtue, added to the high consideration of the Duke of Atholl. Of this nobleman, certain historians have left the highest character. "He was," says Nisbet, "of great parts, but far greater virtues; of a lively apprehension, a clear and ready judgment, a copious eloquence, and of a very considerable degree of good understanding."[4] It is difficult to reconcile this description with the intrigues and bitterness which characterise the Duke of Atholl, in Lovat's narrative of their rivalry; nor would it be easy to reconcile the public report of many men with the details of their private failings. That, however, which has impugned the consistency and sincerity of the Duke of Atholl far more than the representations of Lovat, is the belief that, whilst his feelings were engaged in one cause, his professions were loud in upholding the other; that he was double and self-interested; and that he saved his vast estates from forfeiture by an act of policy which might, in some bearings, be regarded as duplicity, in proof of which it is asserted, that, whilst he pretended to condemn the conduct of his eldest son in joining the Rebellion of 1715, he was the chief instigator of that step.[5] Such was the father to whom Lord George Murray owed his birth. During the unbroken prosperity of his House, the future General of the Jacobite army was born. He was the fifth son of eight children, borne by the first Duchess of Atholl, and was born in the year 1705. Of these, John the eldest, and presumptive heir to the dukedom, had been killed at the battle of Mons, or Malplaquet, in 1709. He was a youth of great promise, and his death was a source of deep lamentation to his father; a sorrow which subsequent events did not, perhaps, tend to alleviate. William, Marquis of Tullibardine, was therefore regarded as the next heir to all the vast possessions and ancestral dignities of his House. His faithful adherence to the Chevalier St. George, and the part which he adopted in the Rebellion of 1715, produced a revolution in the affairs of his family, which, one may suppose, could not be effected without some delicacy, and considerable distress.