Before this time there was unrest in Menton and Roquebrune, where the townspeople had become weary of heavy taxation by the Grimaldi family. They declared their independence, hoping for annexation by Sardinia. France protested. The unrest continued until Charles III of Monaco gave up his claim to the two mainland towns (some 95% of the principality at the time) that had been ruled by the Grimaldi family for over 500 years.