James I of Aragon

James I the Conqueror (Catalan: Jaume el Conqueridor; 2 February 1208 – 27 July 1276) was King of Aragon, Count of Barcelona, and Lord of Montpellier from 1213 to 1276; King of Majorca from 1231 to 1276; and Valencia from 1238 to 1276. His long reign—the longest of any Iberian monarch—saw the expansion of the Crown of Aragon in three directions: Languedoc to the north, the Balearic Islands to the southeast, and Valencia to the south. By a treaty with Louis IX of France, he wrested the County of Barcelona from nominal French suzerainty and integrated it into his crown.