[1] Kitty was the only daughter of Colonel John Dyke Acland and his wife, the former Lady Harriet Fox-Strangways.
After he died, the baronetcy passed to his and Kitty's uncle, their father's brother, Sir Thomas Dyke Acland, 9th baronet (1752-1794).
Kitty and Henry's marriage took place on 26 April 1796, when the future earl was known as Lord Porchester, at St George's, Hanover Square, London.
Kitty's marriage settlement included the Acland estates of Pixton and Tetton in Somerset,[3] which passed into the Herbert family.
A death notice stated that "Hundreds whom her boundless charities and ever active benevolence have rescued from poverty and distress will shed tears of grateful sorrow..."[7] Her husband lived until 1833 and died at his London home in Grosvenor Square and was buried at Burghclere.