Mary Fox, Baroness Holland, known as Lady Mary Fox from 1766–74, was an Anglo-Irish aristocrat from the Mac Giolla Phádraig dynasty and Fox family. She is best known for being the portrait subject of several notable 18th-century artists, including Thomas Gainsborough and Sir Joshua Reynolds.
- Citizenship
- Kingdom of Great Britain
- Born
- 1746
- Died
- October 6, 1778