Treaty of Corbeil

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With the Treaty of Corbeil of May 11, 1258 , a dispute between France and the Kingdom of Aragon was ended and Northern Catalonia and Barcelona were awarded to the Pyrenees state.

The King of France Louis IX. renounced the feudal sovereignty over the counties of Roussillon and Barcelona, ​​which was practically worthless for him, and achieved that James I of Aragon gave up his inheritance claims to the counties of Toulouse and Provence (but not the rule of Montpellier ).

Until 1246 Jakob I had tried, in cooperation with Emperor Friedrich II. And Heinrich III. of England to save the continued existence of the Earl's House of Toulouse and curb the expansion of the French crown to the south.

The long-term goal of Jacob I was directed towards Sicily and the North African coast (promoting maritime trade by creating the first law of the sea in Europe and worldwide: the Llibre del Consolat de Mar ), but collided with similar plans by his son-in-law Alfonso X of Castile . Since both could stir up the other's nobility as needed, they kept each other in check.

The contract also provided for the marriage of the daughter of Jacob I, the Aragonese princess Isabella of Aragon, with Ludwig (* September 21, 1243; † before January 13, 1260), heir to the throne of Louis IX.