Cross reference
Numbers 32:39
39 And the children of Machir the son of Manasseh went to Gilead, and took it, and dispossessed the Amorites that were therein.
Genesis 50:23
23 And Joseph saw Ephraim's children of the third generation: the children also of Machir the son of Manasseh were born upon Joseph's knees.
Numbers 26:29
29 The sons of Manasseh: of Machir, the family of the Machirites; and Machir begat Gilead; of Gilead, the family of the Gileadites.
Joshua 17:1
1 And `this' was the lot for the tribe of Manasseh; for he was the first-born of Joseph. As for Machir the first-born of Manasseh, the father of Gilead, because he was a man of war, therefore he had Gilead and Bashan.