Amabel Hume-Campbell, 1st Countess de Grey, 5th Baroness Lucas (née Yorke; 23 January 1751 – 4 March 1833)[1] was a British diarist and political writer who was a countess and baroness in her own right.

Lady Amabel Yorke was born in 1751, the elder daughter of Philip Yorke, 2nd Earl of Hardwicke, and his wife, Jemima Campbell, 2nd Marchioness Grey, 4th Baroness Lucas.

[4] She wrote about political matters, and had she been male, she would have served in the House of Lords as a Whig.

[5] She married Alexander Hume-Campbell, Lord Polwarth, on 17 August 1780,[6] but the marriage was childless.

[b] Her younger sister, Mary, who predeceased her, married Thomas Robinson, 2nd Baron Grantham, and had children, the eldest of whom inherited the earldom of de Grey and the barony of Lucas.