Cross reference
Numbers 7:48
48 On the seventh day Elishama the son of Ammihud, prince of the children of Ephraim
Numbers 1:10
10 Of the children of Joseph: Of Ephraim: Elishama the son of Ammihud. Of Manasseh: Gamaliel the son of Pedahzur.
Numbers 2:18
18 "On the west side shall be the standard of the camp of Ephraim according to their divisions: and the prince of the children of Ephraim shall be Elishama the son of Ammihud.