The Annual Biography and Obituary for the year 1818 (Longman, Hurst, Rees, 1818), p. 239: "At a proper age, the Princess Charlotte was removed from the nursery, and placed, by her Royal Grandfather, under the superintendance of a very worthy and pious Countess who acted for some years as Gouvernante".
John Burke, A General and Heraldic Dictionary of the Peerage and Baronetage of the British Empire, Volume 1 (1833), p. 433
The Gentleman's Magazine, vol. 80 (1810), part 1, p. 674
