Cross reference
Numbers 7:48
48 On the seventh day Elishama, the son of Ammihud, chief of the children of Ephraim:
Numbers 1:10
10 Of the children of Joseph: from Ephraim, Elishama, the son of Ammihud; from Manasseh, Gamaliel, the son of Pedahzur,
Numbers 2:18
18 On the west side will be the flag of the children of Ephraim, with Elishama, the son of Ammihud, as their chief.