Skip to main content

Klatzko (Melzer), Mordecai ben Asher


KLATZKO (Melzer ), MORDECAI BEN ASHER (1797–1883), Lithuanian rabbi and author. Klatzko was born in Vilna where he studied under *Ḥayyim of Volozhin. He married the daughter of R. Loeb Malzer (Melzer), later adopting his surname. In 1840 he was appointed head of the R. Meilis yeshivah in Vilna, succeeding Israel *Salanter who had headed it for a short period. From 1865 Klatzko served as rabbi in Lida until his death. At an advanced age he became a follower of the ḥasidic movement and led an ascetic life, devoting much attention to the needs of his fellow men. Some of his responsa and talmudic novellae were published by his pupil Abba Joseph Triwusch, together with a biographical introduction, under the title Tekhelet Mordekhai (1889).


Ḥ.N. Maggid-Steinschneider, Ir Vilna (1900), 122–7; idem, in: Oẓar ha-Sifrut, 4 (1892), 531–41; S.M. Chones, Toledot ha-Posekim (1910), 598–600; D. Katz, Tenu'at ha-Musar, 1 (1958), 148f.; 4 (1963), 153f.; Yahadut Lita, 3 (1967), 84.

[Samuel Abba Horodezky]

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Klatzko (Melzer), Mordecai ben Asher." Encyclopaedia Judaica. . 17 Feb. 2019 <>.

"Klatzko (Melzer), Mordecai ben Asher." Encyclopaedia Judaica. . (February 17, 2019).

"Klatzko (Melzer), Mordecai ben Asher." Encyclopaedia Judaica. . Retrieved February 17, 2019 from

Learn more about citation styles

Citation styles 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, cannot guarantee each citation it generates. Therefore, it’s best to use 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 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.