There may also have been some family sentiment in the matter, for while Lady Mary was an intimate friend of Walpole's harum-scarum sister, "Dolly," who was now Lady Townshend, Lady Walpole was very decidedly her enemy.

Lady Mary presently had her tit-for-tat with Lady Walpole by "taking up" Walpole's mistress, Molly Skerritt.
It may be here mentioned that Lady Mar was at this time living with her husband at Paris, at St.Germain, and that she remained abroad for the rest of her life.

She had left England owing to the conduct of Lord Mar in taking an active part in the rebellion of '15.

He had set up the Pretender's standard at Braemar, had suffered defeat at Sheriffmuir, and had been so fortunate as to escape with his master to Gravelines.

In gratitude for his services, the Pretender created Lord Mar a Duke.