Patricianship, the quality of belonging to a patriciate, began in the ancient world, where cities such as Ancient Rome had a class of patrician families whose members were the only people allowed to exercise many political functions. In the rise of European towns in the 10th and 11th centuries, the patriciate, a limited group of families with a special constitutional position, in Henri Pirenne's view, was the motive force. In 19th century central Europe, the term had become synonymous with the upper Bourgeoisie, except for the maritime republics of Italy, where it was the official title of the ruling local nobility.