There are, however, several other theories for the roots of the name.[3] Upper Bavaria came in Roman hands through commander Drusus.[4] The Romans built Via Raetia in 200 AD, which led over the Brenner Pass to Augsburg.[4][5] This Roman road ran through the Weilheim area.[4] Around 476 AD, the Romans withdrew southwards and the Bavarians came into the region.[6]