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
Monaco succession crisis of 1918 to one form or another of proximity of blood, and the Grimaldis' hitherto exclusive control of Monaco's dynastic marital policy was what threatened to enthrone a German duke on France's border, even after the Empire's defeat in war. Just as the ruling families of Britain, Russia, Belgium, and the Netherlands had all become patrilineally German by the twentieth century due to the propensity of monarchical heiresses, seeking dynastically equal marriages, to choose husbands from among Germany's many minor princely families, Monaco was on the verge of the same fate. Although the Grimaldis did not require inter-marriage with royalty by law