JOSEPH BEN JACOB (known also as Bar Saṭya ):
Gaon of Sura about 930-936 and 942-948. He was chosen by the exilarch David ben Zakkai to fill the place of Saadia (c. 930) when the latter was deposed. In 936, however, when the exilarch became reconciled to Saadia, Joseph was deprived of his position, though the income attached to it continued to be paid to him. After Saadia's death (942) Joseph was reappointed gaon, which office he held until 948, when, on account of the impoverishment and general decadence of the Academy of Sura, he left for Bassora, where he died. See Gaon.
- Abraham ibn Daud, in M. J. C. i, 65, 66; letter of Sherira Gaon, ib. 1. 40; comp. ib. ii. 81-83;
- Grätz, Gesch. v. 260, 277 et seq.;
- Weiss, Dor, iv. 158-159.