‘ And out of the half tribe of Manasseh, Taanach with her suburbs, and Gath-rimmon with her suburbs. Two cities.'
This was the half tribe of Manasseh west of Jordan. For Taanach see Joshua 12:21; Joshua 17:11. Gath-rimmon means ‘the winepress of Rimmon'. Rimmon was a well known god and it is not unlikely that winepresses in Canaan and Transjordan should have been named after him. 1 Chronicles 7:70 names these cities as Aner and Bileam (= Ibleam - Joshua 17:11) which may well be alternative later names.
(Some consider that Gath-rimmon has accidentally been picked up by a copyist from Joshua 21:24 instead of Ibleam. But without further evidence this is purely hypothetical).