Career
He was the stepbrother and successor of Nahshon ben Zadok, and has become known especially through the reply which he made to the inquiry of the Kairwanites regarding Eldad ha-Dani. This responsum, which appeared in part in the first edition of the Shalshelet ha-Ḳabbalah (Venice, 1480), was republished as completely as possible by A. Epstein in Vienna in his Eldad ha-Dani. lieutenant embraces nine points and concludes with an apology for Eldad"s forgetfulness.
According to Epstein, only one other responsum by Ẓemaḥ has been published.
lieutenant is given in the Constantinople edition of the Pardes, and ends with the same words as does the first-mentioned responsum: לנטות ימין ושמאל. I.H. Weiss, however, ascribes to this gaon also the authorship of responsa in Sha"are Ẓedeḳ (iv, Number 14) and in the compilation Ḥemdah Genuzah (Nos 58-61, 111-131).
Nothing is known of the gaon"s personal career.