Mary Mildmay, or Mary Fane Countess of Westmorland continued her mother Grace Mildmay's interest in physic and was a significant author of spiritual guidance and writer of letters.
Mary collated and transcribed her mother's medical works. Grace had dedicated her 'Spiritual Meditations' to Mary. Mary wrote a 'Book of Advices to the Children' for her sons Francis and Mildmay. She also wrote letters of advice to Francis. Other letters include a group of business letters sent to Emmanuel College, Cambridge, four letters to her daughter Grace Fane, Countess of Home, and a number of letters of petition to Viscount Dorchester and others. On December 1635 she wrote to Secretary Windebank thanking him for royal letters sent in her favour to the Court of Session in Edinburgh and asking him to prevent the king taking the side of her adversary, the dowager Countess of Home, who was then in London. Westmorland explained that Home had the advantage of continual residence and acquaintance in Edinburgh. She asked him to kept her business secret. On 6 May 1639 Mary wrote a letter to Secretary Windebank advising against sending an army to Scotland in the first Bishop's War. The letter has sometimes been attributed to her daughter-in-law, Mary Vere. A later reader endorsed it as, "A very sencible and Prophetick letter". She wrote that the Scots were better prepared and better suited for war;
"The Scots have many spies which flock about the King; and they cannot but know how the state of this kingdom stands, and be encouraged, knowing how uncertainly a war will be maintained, which is to be maintained out of prerogative, imposition, and voluntary contributions. They know our divisions, and the state of their own combination; and that they have a party amongst us, and that we have none amongst them, and they are a people that can live of nothing, and we, that can want nothing without discontentment and mutiny, and our men and horses so unused to war, that if his majesty attempt any thing before they be better exercised, the dishonour is likely to be increased... "
Writing to her daughter Rachel Fane on 9 January 1640, Mary, now dowager countess, called herself an old hen, her daughter Katherine a chick, and praised Mary Vere; "the olde hen left at home, with her best chick, my daughter of Westmorland hath proved a good Christmas woman & has made on, & allowed of much mirth". Mary died at Stevenage on 9 April 1640 and was buried at Apethorpe.
Family and Children
Mary and Francis had seven sons and six daughters: