During the Reapers' War, the States-General ("Braços Generals") on 21 January 1641 declared the French king Louis XIII Count of Barcelona as Louis I. Despite the reconquest of Barcelona by Spain in 1652, the kings of France held on to the part of Catalonia north of the Pyrénées, where Catalan institutions remained. This lasted until the conclusion of the Franco-Spanish War and the signing of the Treaty of the Pyrenees in 1659, where French authorities renounced Catalonia, but received Northern Catalonia, which became the French province of Roussillon.