Career
In 1340 he wrote Toledot Yiẓḥaḳ, in which he gives valuable information concerning other Provençal authors and discusses the history of tradition. This work is known also by the name Sha"are Ẓiyyon (ed South Buber, Yaroslav, 1885). He wrote also Ḳiryat Sefer, a commentary on the Pentateuch (Benjacob, Oẓar ha-Sefarim.
Zunz, Z G p 479.
South Buber, in the preface to Sha"are Ẓiyyon).
