Frederica Murray, Countess of Mansfield (born Frederica Markham; 1774[1] – 29 April 1860), formerly Frederica Markham, was the wife of David William Murray, 3rd Earl of Mansfield.
Frederica was one of the seven daughters of William Markham, Archbishop of York, and his wife, the former Sarah Goddard.
In 1796 Murray succeeded his father, David Murray, 2nd Earl of Mansfield, as Earl of Mansfield; he inherited Kenwood House in Camden, London.
[5] They had nine children:[2][6] The countess's father, the Archbishop of York, died in 1807.
[10] The countess is thought to have been responsible for extensive works carried out on Kenwood House in the period 1813–1816, which necessitated a doubling of staff.