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 32:39

Amorites : members of a pre-Israel Semitic tribe from Mesopotamia

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´)

Machir : son of Manasseh (Joseph); father of Hezron's wife and of Gilead,son of Ammiel at Lo-Debar; Mephibosheth's friend

Manasseh : the tribe of Manasseh.