Easton's Bible Dictionary (1897)
Not my people, a symbolical name given by God’s command to Hosea’s second son in token of Jehovah’s rejection of his people (Hos. 1:9, 10), his treatment of them as a foreign people. This Hebrew word is rendered by “not my people” in ver. 10; 2:23.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
LO-AM'MI (not my people), the name applied symbolically to the son of the prophet Hosea. representing Israel. Hos 1:9. See Lo-Ruhamah.
Hitchcock's Bible Names (1869)
not my people