Monaco succession crisis of 1918 Monégasque ordinance of 15 May 1911 acknowledged the child as Louis' daughter, and admitted her into the Grimaldi dynasty. However this was discovered to be in procedural violation of the statutes of 1882. The ordinance was therefore invalid, and the sovereign prince was so notified by the National Council of Monaco in 1918. As a consequence, an amendment of 30 October 1918 modified the law to allow the reigning prince or, with the monarch's consent, the Hereditary Prince of Monaco (the heir apparent or heir presumptive, whether a child of the reigning prince or not), to adopt a child, from
Prince's Palace of Monaco heiress of Cardinal Mazarin. Thus Monaco's ruling family acquired all the estates bequeathed by Cardinal Mazarin, including the Duchy of Rethel, and the Principality of Château-Porcien. Honoré III was a soldier who fought at both Fontenoy and Rocourt. He was happy to leave Monaco to be governed by others, most notably a former tutor. It was on one of Honoré III's rare visits to the palace in 1767 that illness forced Edward, Duke of York, to land at Monaco. The sick duke was allocated the state bedchamber where he promptly died. Since that date the room has been known as