Charles Ellicott Commentary 1 Chronicles 5:23-24

"And the children of the half-tribe of Manasseh dwelt in the land: they increased from Bashan unto Baal-hermon and Senir and mount Hermon. And these were the heads of their fathers` houses: even Epher, and Ishi, and Eliel, and Azriel, and Jeremiah, and Hodaviah, and Jahdiel, mighty men of valor, famous men, heads of their fathers` houses." — 1 Chronicles 5:23-24 (ASV)

The sons of half-Manasseh "in the land" east of Jordan. The translation should be: And the children ... dwelt in the land, from Bashan unto Baal-hermon and Senir and mount Hermon. These were many. Their territory extended from "Bashan," the domain of Gad, in the south, to the mountains of Hermon, or Antilibanus, in the north.