Amabel Yorke (1751-1833) (known as “Bell”) was the eldest daughter and co-heir of Philip Yorke, 2nd Earl of Hardwick, and Jemima York, 2nd Marchioness Grey (1723-1797). In 1772 she married Alexander Hume-Campbell, Lord Polwarth (1750-1781), the eldest son of the 3rd Earl of Marchmont, and was known as Lady Bell Polwarth. The marquessate of Grey became extinct on her mother’s death, but Amabel was made Countess in her own right in 1816 with the style Countess de Grey of Wrest, to distinguish her title from the earldom of Grey which was created in 1806. She had no children and the title passed to her nephew.