In the 10th century, the territory of Le Boulou appears to be shared between the lord of Saint-Jean-Pla-de-Corts, lady Minimilla, and the church of Elne. Le Boulou is then ruled by the lords of Montesquieu from the 11th to the 14th centuries. It finally becomes part of the crown lands.
At the end of the 17th century, Bernard de Kennedy, following the court of James II of England in France, decides to settle in Le Boulou and receives French citizenship from Louis XIV of France. His grandson, Côme de Kennedy, is granted a title of lord of Le Boulou in 1755. Côme's son, Joseph de Kennedy is the running lord during the French Revolution. But his house is used as a headquarter by the Spanish general Antonio Ricardos during the first battle of Boulou in 1793. Accused of betrayal, Joseph de Kennedy is sent to the guillotine on 2 May 1794, on the next day after the second battle of Boulou.