Yitzchak Klauber of Posen

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Rav Yitzchok of Posen Klauber, Rabbi of Posen

Hebrew: יצחק קלויבער מפויזנא Klauber, יצחק קלויבער
Also Known As: "Kloyber of Worms", "R'Jitschak Kloiber", "Yitzhak Kauber", "Rabbi Itzhak Kloiber of Worms", "Kloiber", "Rav Yitzchok Rav of Posen Klauber", "Rabbi of Posen"
Birthplace: Worms, Rhineland-Palatinate, Germany
Death: Died in Poznan, Poznań County, Wielkopolskie, Poland
Immediate Family:

Son of Zaharia Mendel Klauber and eshet Zaharia Mendel Klauber
Husband of wife, Yitzchak Klauber (bat Rabbi Chaim Issenheimer) and wife, Yitzhak Klauber, of Posen
Father of eshet R. Yoel Singer (Klauber); wife, Yechiel ben Avraham) Luria; bat Rabbi Yitzchak (eshet Yoel HaCohen) Shapira (Klauber); Dina Luria and Falka (Walka) Katz
Brother of bat Zaharia Mendel Klauber and Falka? Katz (Klauber)

Occupation: rosh yeshiva of Pozna, Rabbi, Rosh Yeshiva of Poznan, Rosh Yeshiva of Pozna
Managed by: Private User
Last Updated:

About Yitzchak Klauber of Posen


. . .when the Maharshal quotes his grandfather, R. Yitzchok Klauber, noted are many of the places where the Maharshal cites his grandfather, throughout his many seforim (p. 3, n.6), along with a brief biographical sketch. [5] The same style note can be found when the Maharshal mentions his father-in-law R. Kalonymus (Kalman) Havarkstein-Yerushalmi; a listing of other citations, along with a thumbnail bio, including the Maharshal's wife's name (p. 38, n.28).


Hebrew Books


Moses ben Isaac ha-Levi Minz (15th century) was a German rabbi and contemporary of Israel Isserlein, whom he frequently consulted. He was successively rabbi at Mainz, Landau, Bamberg, and Posen.

In his responsa (No. 114) he mentions a certain Jacob Margolioth of לוקו (Lucca?), and refers to a case of divorce in Posen in 1444 (Steinschneider gives 1474). Fränkel (Zeitschrift, iii. 387) doubts that Moses ever was at Posen. He suggests that פוזנו (Posen) is a printer's mistake for פיזרו (Pesaro).

Moses' responsa (Cracow, 1617) mention also Joseph Colon, Israel Isserlein, and his cousin Judah Minz. Responsum No. 46 contains a dispute over a philological point with Eliezer Treves (comp. M. Wiener in Monatsschrift, xvi. 390).

Jewish Encyclopedia bibliography

  1. • Azulai, Shem ha-Gedolim, i.140;
  2. • David Conforte, Ḳore ha-Dorot, p. 27b;
  3. • Julius Fürst, Bibl. Jud. ii.380;
  4. • Moritz Steinschneider, Cat. Bodl. cols. 1946-1947.


Hebrew Books

About Yitzchak Klauber of Posen (עברית)

תושב פוזנא, אשר על ברכיו גדל נכדו המהרש׳׳ל, שהתייתם מאביו

בהיותו רך בשנים, הגר׳׳י קלויבער (נקרא ע׳׳ש העיר קליווא במדינת

אשכנז) היה גדול בתורה, והמהרש׳׳ל כתב עליו, שאנשי פוזנא ״הכל

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Yitzchak Klauber of Posen's Timeline

Worms, Rhineland-Palatinate, Germany
Age 25
Age 25
Landau in der Pfalz, Rheinland-Pfalz, Deutschland
Age 28
Age 45
Landau, Rhineland-Palatinate, Germany
Age 55
Poznan, Poznań County, Wielkopolskie, Poland