Founded in 1866, Monte Carlo has a name of Italian origin meaning "Mount Charles", in honor of the then-reigning prince, Charles III of Monaco. The specific mountain is the escarpment at the foot of the Maritime Alps on which the town stands.
The history of the area and the ruling Grimaldi family, however, dates back centuries. The port of Monaco is first mentioned in historical records as early as 43 BC, when Julius Caesar concentrated his fleet there while waiting in vain for Pompey. In the 12th century, the area fell under the sovereignty of Genoa, which was granted the entire coastline from Porto Venere to Monaco. After much conflict, the Grimaldis regained the rock in 1295, but suffered a significant amount of opposition in the ensuing years. In 1506 the Monegasques, under Lucien, Lord of Monaco, were under siege for some four months by the Genoan army, which had ten times the number of men. Monaco officially received full autonomy in 1524, but experienced difficulty retaining power, and on occasions briefly fell under the domination of Spain, Sardinia, and France.