[1][2][3][4]

1. ↑ Del Balzo: Duchi di Presenzano Libro d'Oro della Nobiltà Mediterranea, www.genmarenostrum.com
2. ↑ Burke's Landed Gentry, 18th edition, vol. I, ed. Peter Townend, 1965, p. 650, 'Wentworth-Stanley of High Wych Grange' pedigree
3. ↑ Son of marchioness found shot dead Daily Telegraph 18 December 2006
4. ↑ Tom Sykes (18 March 2015). "Post-Prince Harry, Cressida Bonas' Career Takes Off". The Daily Beast.