The Menton area has been inhabited since the paleolithic era, and is the site of the original "Grimaldi Man" find of early modern humans, as well as remains of Neanderthals and Cro-Magnons.[2] In Roman times, the via Julia Augusta, a road connecting Placentia (now Piacenza) with Arelates (now Arles) passed through Menton, running along the Rue Longue in the old town.[3] The first major settlement occurred during the 11th century CE, when the Count of Ventimiglia constructed the Château de Puypin (Podium Pinum) on the Pépin hill, north and west of the modern town center. During the 13th century, the seigneury of Puypin fell to the Vento family of Genoa who built a new castle along the Roman road, now the site of the Vieux-Château cemetery, providing the core around which the current town grew. Menton was thus incorporated into the Republic of Genoa. The first mention of Menton dates from 21 July 1262, in the peace treaty between Charles of Anjou and Genoa. Its position on the border between the Angevin-ruled Provence and the Republic of Genoa, which at the time claimed Monaco as its western limit, made it a coveted location.
Acquired in 1346 by Charles Grimaldi, Lord of Monaco, Menton was ruled by the Princes of Monaco until the French Revolution. Annexed during the Revolution, Menton remained part of France through the First Empire. It belonged to the district of Sanremo in the department of Alpes-Maritimes, which at the time included Monaco and Sanremo.
In 1814, Menton was included in a reconstituted principality of Monaco which, after Napoleon's Hundred Days in 1815, became a protectorate of the King of Sardinia. The Princes of Monaco were obliged to do homage to the King for Menton, although not for Monaco itself.
In 1848, Menton, along with its neighbour Roquebrune, seceded from Monaco, due at least in part to a tax imposed on lemon exports. They proclaimed themselves a "free city" during the 1848 revolutions related to the Italian
