HaRav Yitzhak Klauber married twice. First, a daughter of Rabbi Chaim Issenheimer (ca.1445 – ca.1552) and his wife Voegelin. Second, he married a daughter of Eliezer Lipman Schrentzel. In each case the name of the daughter is not known.
Yitzhak Klauber’s first marriage to a ‘Daughter of Issenheim’ just one daughter was produced – Eshet. On his second marriage to a ‘Daughter of Schrentzel’ THREE daughters were produced. Two of these daughters have had their names preserved – Dina and Falka. ALL The FOUR daughters of Yitzhak Klauber’s were the progenitors of the REIS family.
The descent line from Eshet to the Reis family is as follows:
HaRav Yitzak Klauber (ca. 1475 – 1539) == A Daughter of Issenheimer >> Eshet Klauber == Rabbi Yoel Singer >> Chana Falk Singer == Rabbi Abraham Hertzkus (ca. 1535 – 1602) >> Rabbi Yitzchok Hirsh / Hertz == N.N. >> Naftali Zvi Hirsh / Hertz >> Sarah Hertz == Benyamin Klausner/ (ca. 1550 – 1626) >> Zecharya Mendel Klauziner (ca. 1590 – 1672) == Yuta / Juta Loew >> Aryeh-Leib Fishles Kalusziner / Klausner == Yehudit (Jute / Jutta) Leib Saba Fischel >> Pearl Aryeh Leib Kloisner / Rivka Perla Klauzner (ca. 1666 – 1722 == Ezekiel Joshua Feivel Teomim (ca. 1637 – ca. 1726) >> Chaim Jonah Frankel-Teomim == Sarah Oppenheim >> Magdelene Genendel Frankel-Teomim (1713 – 1778) == Simon Isaac Bondi (1711 – 1773) >> Jonas Bondi (1732 – 1765) == Bella / Belle Schifra >> Clara / Caroline Bondi (1760-1829) == Koppel Loeb of Bamberg >> Moises Loeb / Moritz Reis (1782 – 1855) == Émilie Bickartt (1784 ) >> Jonas Reis (1809 – 1877) == Marian Samuel (1825 – 1900) REIS FAMILY
From the three Daughters that Yitzak Klauber had with his wife ‘A Daughter of Schrentzel’ three descent lines to the Reis family can be traced.
From Dina Klauber:
HaRav Yitzak Klauber (ca. 1475 – 1539) == A Daughter of Eliezer Lipman Schrentzel >> Dina Klauber == Rabbi Shlomo Ashkenazi Luria >> David Yehiel Drucker Luria == Kendel Isserles >> Deborah Rivkah Luria Drucker (1545 – 1617) == Shaul Wahl Katzenellenbogen (ca. 1541 – 1616) == Hinda Halevi Horowitz (ca.1570 – ca.1617) >> Beila Wahl Katzenellenbogen (ca. 1610 – ca. 1669 == Jonah I Frankel Teomim (1596 – 1669) >> Ezekiel Joshua Feivel Teomim (ca. 1637 – ca. 1726) == Pearl Aryeh Leib Kloisner (ca. 1666 – 1722) >>>>> REIS FAMILY
From Falka Klauber
HaRav Yitzak Klauber (ca. 1475 – 1539) == A Daughter of Eliezer Lipman Schrentzel >> Falka Klauber ==
Mordechai Gershon Katz (ca. 1486 – 1577) >> Yosef HaCohen Katz (1511 – 1591) == Schprinze / Shprinza / Shprinze (Eberles) Altschuler >> Rivka Katz == Mordecai Yechiel Schrentzel (ca. 1560 – 1616) >> Gittel Fishelis Schrentzel (ca. 1600 – 1652) == Ephraim Fischel (ca 1570 – 1653) >> Yehudit (Jute) Leib Saba == Rabbi Arye-Leib Fischles Kalusziner / Kloisner (ca. 1620 – 1671) >> Pearl Aryeh Leib Kloisner (ca. 1666 – 1722) == Ezekiel Joshua Feivel Teomim (ca. 1637 – ca. 1726) >>>>> REIS FAMILY
A Daughter of Klauber
A Daughter of Klauber == Yechiel Luria (1485 – 1525) >> Shlomo Luria MaHaRSHaL (1510 – 1573) == Lipka Haberkasten (ca. 1520 – 1572) >> Valentina Luria (1535 – 1595) == Ephraim Fischel Ashkenazi >> Naftali Zvi Hirsch, Nassi Eretz Hakodesh (ca. 1550 – 1626) == Tzvi Hirsch HaCohen Hacohen >> Ephraim Fischel (ca 1570 – 1653) == Yehudit (Jute) Leib Saba >> >> Pearl Aryeh Leib Kloisner (ca. 1666 – 1722) == Ezekiel Joshua Feivel Teomim (ca. 1637 – ca. 1726) >>>>> REIS FAMILY
HaRav Yitzhak Klauber of Posen
HaRav Yitzhak Klauber of Posen (1475-1530) was a prominent rabbi and scholar in 16th century Poland. He served as the head of the rabbinical court (Av Beit Din) and Rosh Yeshiva in Worms and Posen. Klauber was renowned for his expertise in prayer liturgy and even had his own siddur (prayer book), which was unfortunately destroyed along with his other writings in a fire in Posen.
Klauber was the grandfather of the famous Rabbi Shlomo Luria (Maharshal) and played a significant role in his upbringing after Maharshal was orphaned at a young age13. He was highly respected in Posen, with the Maharshal noting that the people of Posen “did everything according to his word”.
Some of Klauber’s responsa (rabbinic decisions) survived and were passed down to his grandson, the Maharshal, but these too were later destroyed in a fire3. Klauber’s influence extended beyond his immediate family, as he was also the brother-in-law of Jacob Worms, who served as the chief rabbi of all German imperial communities.
HaRav Yitzhak Klauber’s legacy continued through his descendants, including his grandson Maharshal, and his connection to other prominent rabbinic families of the time, such as the Luria family.