Titles and styles:
- 1894-Present: Her Excellency The Princess Matilda Fredericka "The Reborn", Countess of Mardon, Dame of the Order of the Petrine Laurel
- 1898-Present: Count-Consort of Mardon, Paul Dmitrievich Montalt "The Tongue", "The Unspoken", Knight of the Circle of the Petrine Eagle
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