Gamaliel of Jabneh (gəmā`lēəl, jăb`nē), fl. A.D. 100, Jewish scholar; grandson of the Gamaliel who, according to tradition, taught St. Paul the law. A Palestinian Tanna, he succeeded Johanan ben Zakkai Johanan ben Zakkai (jōhăn`ən bĕn zăk`āī)
..... Click the link for more information. as head of the academy at Jamnia Jamnia (jăm`nēə), biblical Jabneel
..... Click the link for more information. . He centralized rabbinic authority and was recognized by the Romans as a leader of his people. He played a significant role in the formulation of two important innovations in Jewish ritual: the final version of the Amidah (the 18 blessings) and the Passover seder, which substituted for the paschal sacrifice of the now destroyed Temple. He also helped to standardize the Jewish calendar.

Gamaliel II

or Gamaliel of Jabneh

(flourished 2nd century) Rabbi and president of the Sanhedrin. The grandson of Gamaliel I, he rallied the Jews who had taken refuge in the city of Jabneh after the fall of Jerusalem to the Romans in AD 70. He became patriarch of the Jewish community of Israel c. AD 80. One of the greatest legal scholars of his era, Gamaliel is frequently cited in the Mishna. He helped unify the Jews by regulating prayer ritual and the Jewish calendar.