Althorp Papers. Vol. mccclxxxvii. 1. Letters to Frederick Spencer from his father, George John, 2nd Earl Spencer; 1818-1831. 2. Letters to Frederick Spencer from his mother, Lavinia, Countess Spencer; 1819-1828.
Althorp Papers. Vol. mccclxxxviii. 1. Letters to Frederick Spencer from his elder brother John Charles Spencer, (1782-1845), Viscount Althorp and 3rd Earl Spencer (from 1834); 1827-1843. Content includes discussion of family health and news, local and national politics, hunting and shooting. 2...
Althorp Papers. Vol. mcccxci. Letters to Frederick Spencer from his younger brother, George (1799-1864); 1818-1857. Content includes discussion of family health and news, crisis of faith and his Catholic conversion in Rome.
Althorp Papers. Vol. mcdlxiii (ff. 180). Letters from Richard Watson (1800-1852), son of the 2nd Baron Sondes, and Lavinia Watson, daughter of Lord George Quin; 1842-1854.
Althorp Papers. Vol. mcdlxiv (ff. 231). Letters from Thomas Dundas, Earl of Zetland (1795-1873) and Sophia Jane, née Williamson, Lady Zetland (1803-1865); 1839-1854. Partly printed.