I Chronicles 2:44 Midrash

וְשֶׁ֣מַע הוֹלִ֔יד אֶת־רַ֖חַם אֲבִ֣י יָרְקֳעָ֑ם וְרֶ֖קֶם הוֹלִ֥יד אֶת־שַׁמָּֽי׃

And Shema begot Raham, the father of Jorkeam; and Rekem begot Shammai.

Read midrashic interpretation of I Chronicles 2:44: and classical rabbinic exegesis.