Usually, a municipality has the name of its biggest town or city, or at least, of its historically most important town or city, however, the municipality is, usually, much larger than the city or town after which it is named.
Usually, a municipality has the name of its biggest town or city, or at least, the municipality is much larger than the city or town. This is usually. This is however. This is of its historically most important town. This is of city. It is named.