Leicester is about 2,000 years old and was called "Ratae Corieltauvorum" when it was founded by the Romans. After the Romans had gone and the Anglo-Saxons settled there the town of Leicester was founded and named after the River Soar (then called Leire) and "cester" meaning the Roman ruins. Much later, after the invasion by the Danes, Leicester was within the area under Danish rule and one of the fortified "Five Burghs". In early modern times it became a centre of the manufacture of boots, shoes and knitted clothes such as socks. 