Being wise, handsome, and wealthy (Bava Metzia 84a; Yer. Bava Metzia iv. 9d), Abbahu became not only popular with his coreligionists, but also influential with the proconsular government (Hagigah 14a; Ketubot 17a).
Isaac is mentioned in the Tosafot (Yeb. 5a, 71a; Ket. 38b; Zeb. 73b; and frequently elsewhere), and Isaac ben Moses, in his "Or Zarua'," No. 739, quotes Isaac ben Jacob's commentary on Ketubot, a manuscript of which exists in the Munich Library (No. 317).