Rab Acha bar Zeira [and in the Jerusalem Talmud, in the first chapter of Berakhot, it is Rabbi Achia, and in Pesachim, chapter two, it is Achva, as in the language of the Jerusalem Talmud, Achva is love. And it seems that they are one and the same]:
Seder_HaDorot,_Tanaim_and_Amoraim.322:1