Ancient Diocese of Laon
diocese

The diocese of Laon in the present-day département of Aisne, was a Catholic diocese for around 1300 years, up to the French Revolution. Its seat was in Laon, France, with Laon Cathedral. From early in the 13th century, the bishop of Laon was a Pair de France, among the elite.
History
The Diocese of Laon was evangelized at an uncertain date by St. Beatus; the see was founded in 487 by St. Remy, who cut it off from the archbishopric of Reims and appointed his nephew St. Genebaldus as bishop.
After an attempt made by the unexecuted Concordat of 11 June 1817 to re-establish the See of Laon, the bishop of Soissons was authorized by Pope Leo XII (13 June 1828) to join the title of Laon to that of his own see. Pope Leo XIII (11 June 1901) further authorized it to use the title of St-Quentin, which was formerly the residence of the bishop of Noyon.
Bishops
Louis Séguier, nominated by Henry IV of France, Bishop of Laon in 1598, refused the nomination to make room for his young nephew Peter de Bérulle, afterwards cardinal and founder of the Oratorians.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 15, 2026. The linked authority identifier is Q1503220. VIAF identifies the subject as 129483114. The Library of Congress control number is nr2005001233. Authority coordinates are 49.564, 3.624. 2 of 4 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1300, 1817, 1828 and 1901.
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This entry incorporates text from “Ancient Diocese of Laon” 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.