Numbers 32:1

Gad : the tribe of Israel descended from Gad, the son of Jacob,the man; the son of Jacob and Zilpah,the tribe of Gad in Israel,a prophet and long time advisor to King David

Gilead : a mountainous region east of the Jordan & north of the Arnon to Hermon,son of Machir son of Manasseh; founder of the clan of Gilead,father of Jephthah the judge,son of Michael of the tribe of Gad
(32° 2´, 35° 43´)

Jazer : a town on the east side of the Jordan
(31° 56´, 35° 43´)

Reuben : the tribe of Reuben

Numbers 32:35

Atroth-shophan : a town in Gad
(31° 57´, 35° 54´)

Atroth-Shophan : a town in Gad
(31° 57´, 35° 54´)

Jazer : a town on the east side of the Jordan
(31° 56´, 35° 43´)

Jogbehah : a town built by the Gadites about 13 km NW of Amman (OS)
(32° 1´, 35° 51´)

Joshua 21:39

Heshbon : a town of south-eastern Judah
(31° 48´, 35° 48´); (31° 12´, 34° 56´)

Jazer : a town on the east side of the Jordan
(31° 56´, 35° 43´)