It was at this juncture that the Earl of Mar came forward as the advocate of the Duke of Queensbury's measures, and the opponent of the Squadrone Volante, who had now completely fixed upon themselves that name, from their pretending to act by themselves, and to cast the balance of contending parties in Parliament. The opposition of Lord Mar to the Squadrone was peculiarly acceptable to the Tories, or Cavaliers, who had recently applied to that faction to assist them in the defence of their country against the Union, but who had been greeted with an indignant and resolute refusal. The Earl of Mar therefore appeared as the champion of the Cavaliers, and for the first time won their confidence and approbation. "He headed," writes the bitter and yet truthful Lockhart, "such of the Duke of Queensbury's friends as opposed the Marquis of Tweedale and his party's designs; and that with such art and dissimulation, that he gained the favour of all the Tories, and was by them esteemed an honest man, and well inclined to the royal family. Certain it is, he vowed and protested as much many a time; but no sooner was the Marquis of Tweedale and his party dispossessed, than he returned as a dog to the vomit, and promoted all the court of England's measures with the greatest zeal imaginable."[23] The three parties in the Scottish Parliament, according to the same authority, consisted of the Cavaliers,--that remnant of the Jacobite party which remained vigorous, more especially in the Highlands, since the days of Dundee,--of the Squadrone, "or _outer_ court party," and of the present court party, consisting of true blue Presbyterians and Revolutioners.[24] With the interests of the latter party the Earl of Mar was undoubtedly engaged. Scotland was at this time, and continued for several years, racked with dissensions regarding the Treaty of Union. No one can form an adequate idea of the heartburnings, feuds, parties, and tumults, by which that great measure was preceded, and followed, without looking into the contemporary writers, whose aim it ever is to heighten the picture of passing events; whereas the calm historian subdues it into one general effect of keeping.