Thru both ladies, their common descendant is Luigi Vittorio de Savoie (1721–1778: HRH's mother's maternal great5-grandfather), Prince de Carignano. Son of Vittoria Francesca di Savoia (1690–1766; great5-granddaughter of Diane) & Vittorio Amadeo de Savoie (1690–1741; great3-grandson of Catherine), Prince de Carignano. Jf. Michael av Kent, Prinsesse (2005): The Serpent and the Moon: Two Rivals for the Love of a Renaissance King, Simon & Schuster
Thru both ladies, their common descendant is Luigi Vittorio de Savoie (1721–1778: HRH's mother's maternal great5-grandfather), Prince de Carignano. Son of Vittoria Francesca di Savoia (1690–1766; great5-granddaughter of Diane) & Vittorio Amadeo de Savoie (1690–1741; great3-grandson of Catherine), Prince de Carignano. Jf. Michael av Kent, Prinsesse (2005): The Serpent and the Moon: Two Rivals for the Love of a Renaissance King, Simon & Schuster