In April 1619, in London, Anne Clifford visited her and her mother, Lady Kinloss in a house at Blackfriars, where the Countess of Somerset had stayed.

She wrote more letters to the Earl of Newcastle, relating her son William's grand tour in France, and the arrival of the Prince Palatine at court.

[12] At the outbreak of the English Civil War she was one of the most enthusiastic royalists; her second son, Charles was killed at the battle of Gainsborough on 28 July 1643.

She also kept up correspondence with the principal royalists on the Continent, and General Monck sent it to her privately to make her aware of his intention to restore the king.

William Herbert, 3rd Earl of Pembroke wrote a volume of poems in praise of her and Lady Rich, which was published with a dedication to her by John Donne.

She wrote to the Earl of Haddington (d. 1640), alluding to the Bishops' Wars, "If the calamity be only to terrify not to punish our foul faults, for which I fear we must bleed e'er we can expiate them, I hope there is left a possibility for your Lordship again to see this part of the world."

"[20] Some of these letters are dated at "Les", meaning Leicester Abbey a home she used more after her son's marriage in March 1639, until it was destroyed in 1645 following the capture of the town by Prince Rupert.

[21] To William Douglas, Earl of Morton, she wrote news of Charles I and Parliament, and the death of her daughter Anne, Countess of Warwick, in 1638.

[22] Her biographer Thomas Pomfret described her correspondence with royalists in "characters" or cipher code during the years she lived at Ampthill from 1647 to 1650.

[23] Her name appears in a surviving copy of cipher key used to encode letters between the Countess of Dysart and the Earl of Inchiquin.