Roussillon. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/Roussillon
A historical region of southern France bordering on Spain and the Mediterranean Sea. Originally inhabited by Iberians, it became part of Roman Gaul after c. 121 BC and later changed hands many times, eventually becoming a Spanish possession that was transferred to France by the Treaty of the Pyrenees (1659).
After the Treaty of the Pyrenees, he was sent to direct the conference which had been formed to fix the limits of Roussillon, which had just been ceded to France (1660).
The war opened disastrously for the French, but by 1642, when Richelieu died, his armies - risen from 12,000 men in 1621 to 150,000 in 1638 - had conquered Roussillon from Spain; they held Catalonia, which had revolted from Philip IV.
As lieutenantgeneral in Roussillon in 1475 he protected the countryside against the wrath of the king, who wished to repress with cruel severity a rebellion of the inhabitants.