In the 3rd to 4th century , Arezzo became an episcopal seat : it is one of the few cities whose succession of bishops are known by name without interruption to the present day , in part because they were the feudal lords of the city in the Middle Ages .
In the 3rd to 4th century , Arezzo became an episcopal place : it is one of the few cities whose succession of bishops are known by name without interruption to the present day , in part because they were the feudal lords of the city in the Middle Ages .