also Duchess of Mayenne and Meilleraye) Louise d'Aumont (1781–1789; also Duchess of Mayenne and Meilleraye) Nowadays, the title is still claimed by her descendants, the Sovereign Princes of Monaco. Bibliography Alan V. Murray, The crusader Kingdom of Jérusalem, A Dynastic History 1099-1125, Linacre College Oxford, 2000, Monegasque titles Rethel