French Talmudist and ḥazzan; flourished at Troyes about the middle of the thirteenth century. From quotations in "Minḥat Yehudah" (pp. 1b, 19b, 24a, 28a, 38a) it is known that he wrote a commentary on Ecclesiastes and a grammar, "Sefer Yedidot." In a Pentateuch manuscript (Neubauer, "Cat. Bodl." No. 25) are contained a few of his Masoretic notes. He wrote also a treatise on the calendar (Halberstam MS. No. 321). Another, similar treatise on the calendar, under the title "Mozne Ẓedeḳ" (Hamhurg MS. No. 246), written by a "gaon of Troyes," may perhaps also be ascribed to Joseph. Zunz furthermore ascribes to him the anonymous grammar 
(so the title is given; probably an error for 
or 
; comp. "Minḥat Yehudah," p. 23b).