ROSEN, JOSEPH B. ISAAC:
Ab bet din and, subsequently, rabbi in Russia; born in the first half of the nineteenth century at Horodok, near Pinsk; died Jan. 12, 1885 (Ṭebet 25). His father destined him for a commercial career, but the youth preferred to study, and, although obliged to pursue his researches by himself, he made such rapid progress that at an early age he was appointed ab bet din in his native city. This office he continued to fill down to 1864. He was acting rabbi at Telz from 1864 to 1873, when he was called to the rabbinate of Slonim, where he remained till his death. He published two large works, "'Edut bi-Yehosef,"novellæ on the Shulḥan 'Aruk, Yoreh De'ah (Wilna), and "Porat Yosef," sermons for the Sabbath (ib.).
- Ha-Asif, 1885, ii. 761;
- Waiden, Shem ha-Gedolim he-Ḥadash, ii. 58a.