JOS 21:27

27 They also allotted towns and the surrounding pastureland to the Gershon clans. Those clans were also descended from Levi. They were allotted two cities from the area that had been allotted to the tribe of Manasseh [that is on the east side of the Jordan River]. Those cities were Golan in the Bashan region, which was one of the cities to which people could run/escape to be safe/protected, and Be-Eshtarah.