I Chronicles 2:11 Midrash

וְנַחְשׁוֹן֙ הוֹלִ֣יד אֶת־שַׂלְמָ֔א וְשַׂלְמָ֖א הוֹלִ֥יד אֶת־בֹּֽעַז׃

and Nahshon begot Salma, and Salma begot Boaz;