Robert II, Prince of Sedan
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Reign
Robert Therosius de Joannes, regally known as Robert I, Prince of Sedan, is the current Sovereign Prince of Sedan and the seventh since its formation.
Titles, Styles and Honors
Full title as Prince of Sedan
The official title of Prince Robert I is: His Serene Highness, Robert I By the Grace of God, Sovereign Prince of Sedan, Count of Joannesport, Louisville, Haverlock and Döbern, Viscount of Fauconberg, Baron of Avoria and Pyrmont, Protector and Lord of the Valley of Goats, the Haikaprier
Styles
1889-1890: His Highness, Prince Robert de Joannes of Sedan.
1890-1912: His Highness, The Crown Prince of Sedan, Robert de Joannes.
1912-Present: His Serene Highness, The Sovereign Prince of Sedan, Robert I.