Rabbi Elazar ben Marom [Jerusalem Talmud Megillah 4:2 and in Perek Kira] and in the Book of Scribes, Chapter 21 [before Rabbi Yonah, Jerusalem Talmud 4:3 of Ta'anit, and in the Midrash Ruth, verse "And Boaz said to his young man, 'Whose girl is this?'", and in the Midrash Hazit, verse "Return, return, O Shulamit," in Rabbi Maron]:
Seder_HaDorot,_Tanaim_and_Amoraim.540:1