Isaac ben Jacob Ha-Lavan of Prague
ISAAC BEN JACOB HA-LAVAN OF PRAGUE
ISAAC BEN JACOB HA-LAVAN OF PRAGUE (12th century), tosafist of Bohemia. It has been maintained by some that he was called "ha-Lavan" ("white") because of his white hair and by others that the name is derived from the river Elbe. He was also known as Isaac of Bohemia and Isaac of Regensburg. He was a brother of the well-known traveler *Pethahiah of Regensburg. Isaac lived in Germany and in France, where he studied under *Isaac b. Asher ha-Levi, and under Jacob b. Meir *Tam. He was the author of tosafot to Ketubbot and Yoma which have been published on the basis of various manuscripts – Ketubbot (1954) by P.J. Kohn; Yoma by D. Genachowski (1956) and by P.J. Kohn (1960) in a different reading of the manuscript. *Eliezer b. Joel ha-Levi possessed a collection of Isaac's responsa. He is known also to have compiled various piyyutim. The Sefer ha-Yashar of Jacob Tam, containing sayings of Tam preserved by his pupils, also contains traditions transmitted by Isaac (Urbach, Tosafot, p. 82 n. 27). Isaac is mentioned in the tosafot in the printed editions of the Talmud to Yevamot, Ketubbot and Zevaḥim, as well as in the following works of the posekim: Yiḥusei Tanna'im ve-Amora'im, Arugat ha-Bosem, Roke'aḥ (which includes a responsum by Isaac to *Judah b. Kalonymus b. Moses), the responsa of Isaac Or Zarua, and *Meir b. Baruch of Rothenburg (which quotes a complete responsum by him), Orḥot Ḥayyim, Kol Bo, and others. According to Aptowitzer, Isaac died before 1188 but according to Zunz and Tykocinski, after 1193.
Zunz, Lit Poesie, 313, 489; Zunz, Gesch, index; Gross, Gal Jud, 168, no. 4; S.D. Luzzatto, in: Kerem Ḥemed, 7 (1843), 69; V. Aptowitzer, Mavo le-Sefer Ravyah (1938), 174, 260, 296, 375f.; G. Scholem, in: Tarbiz, 3 (1931/32), 276f.; Tykocinski, in: Germ Jud, 1 (1934), 275f.; and index s.v.; Urbach, Tosafot, index s.v.; D. Ganchowsky, in: Sinai, 38 (1956), 288–311; idem (ed.), Tosefot R. Yiẓḥak ben Ya'akov ha-Lavan le-Massekhet Yoma (1956), introduction.
[Shlomoh Zalman Havlin]
"Isaac ben Jacob Ha-Lavan of Prague." Encyclopaedia Judaica. . Encyclopedia.com. (December 10, 2018). https://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/isaac-ben-jacob-ha-lavan-prague
"Isaac ben Jacob Ha-Lavan of Prague." Encyclopaedia Judaica. . Retrieved December 10, 2018 from Encyclopedia.com: https://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/isaac-ben-jacob-ha-lavan-prague
Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).
Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.
Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:
Modern Language Association
The Chicago Manual of Style
American Psychological Association
- Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
- In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.