Ambrosian Rite, named after St. Ambrose, bishop of Milan in the fourth century, is practised by five millions inhabitants in northern Lombardy, Italy, including the regional capital city of Milan. It shows differences during the Mass, and some parts of the liturgic year have different durations. Probably the most visible difference is the fact that the traditional Ambrosian Carnival ends 4 days later, on "sabato grasso" (fat Saturday), instead of "mardi gras" (fat Tuesday). During the middle ages, after Roman catholic priests where forbidden marriage, Ambrosian priest where still allowed to marry, but this difference ended after some two hundred years.