Mary Watson-Wentworth, Marchioness of Rockingham (née Liddell, later Bright; 1735 – 19 December 1804)[1] was the wife of Charles Watson-Wentworth, 2nd Marquess of Rockingham, who was prime minister of Great Britain in 1782, and previously from 1765 to 1766.
[2] On 26 February, 1752, Lady Liddell married Whig politician Charles Watson-Wentworth.
She was acknowledged as a skilled politician by contemporaries, with opposition party members sometimes directing their letters straight to her.
Lady Rockingham mentioned the sets in her letters "Lord Stormont says being in your dress is quite bourgeois, but I hope you will approve of it, I shall take it monstrous if you don't, for I mean it as a compliment to you".
The widowed Lady Rockingham settled at Hillingdon House, Middlesex, in 1785, where she died in 1804 and was buried with her husband at York Minster.