Duke of Longueville
title created in 1505 for François d'Orléans

Duke of Longueville (Longueville-sur-Scie) was a title of French nobility, though not a peerage of France.
History
The title was created in 1505 by King Louis XII of France for his first cousin once removed, François d'Orléans, Count of Dunois, son of François d'Orléans, Count of Dunois, son of Jean d'Orléans, himself an illegitimate son of the Duke of Orléans.
From 1648, the Duke of Longueville was also Sovereign Prince of Neuchâtel, a Swiss territory. In 1654, the eighth duke was created a peer as Duke of Coulommiers, but the peerage was never registered and so became extinct at his death.
The title became extinct in 1694, following the death of Jean Louis Charles d'Orléans, who was the brother of Marie de Nemours.
d'Orléans-Rothelin line
The d'Orléans-Rothelin branch emerged as a distinct cadet, illegitimate branch of the House of Orléans-Longueville. This collateral branch was founded when François d'Orléans, Marquis de Rothelin and Prince de Châtel-Aillon, had an illegitimate son named François with Françoise Blosset, Dame de Colombières. This son became the first of the line to hold the title of Baron de Varenguebec et de Neaufle. The line itself solidified through the title and estate of the Marquisate of Rothelin (derived originally through the inheritance of Johanna of Baden-Hachberg-Sausenberg, Countess of Neuchâtel and Margravine of Rothelin, who married into the Orléans-Longueville family). Over generations, members of this collateral, illegitimate line held prominent titles and properties, including the marquisate of Rothelin alongside various noble lordships in the Kingdom of France, distinguishing themselves through significant military, ecclesiastical, and cultural contributions to the French ancien régime.
Begin with the source’s own compact description: “Duke of Longueville” is title created in 1505 for François d'Orléans. The dossier treats that line as a proposition to test through Duke, Longueville and title, not as a finished interpretation.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 26, 2026. The linked authority identifier is Q127604354. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1505, 1648, 1654 and 1694.
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This entry incorporates text from “Duke of Longueville” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.