"Princess Charlotte, Duchess of Valentinois (Charlotte Louise Juliette Grimaldi; 30 September 1898 – 16 November 1977), was the daughter of Louis II, Prince of Monaco, and ...
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the mother of Prince Rainier III. From 1922 until 1944, she was the Hereditary Princess of Monaco, heiress presumptive to the throne." - (en.wikipedia.org 03.11.2022)
