ר' אבא בר פפא

Rabbi Abba bar Pappa said to Rabbi Zeira, "I encircled the ladder of Tzur and approached Rabbi Yaakov bar Idi" [(and he asked him if he heard from Rabbi Yochanan his teacher, Bava Metzia 43b)]. And it seems that he is Rabbi Abba the Kohen mentioned above. [(And it seems to me that he is one of the sons of Rabbi Pappa the elder). Because of Rabbi Ada bar Pappa. Because of Rabbi Acha bar Pappa.

Because of Rabbi Chiya bar Pappa (see there), Rabbi Pinchas in his name, Jerusalem Talmud, Chapter 1 of Berakhot]: