Rabbeinu Tam (R. Yaakov ben Meir)

abraham Rabbenu Yakov ben Meir Tam, or, as he is generally called, Rabbenu Tam, was born in the French city of Ramerupt in the year 4860 (1100), when his famous grandfather Rashi was 60 years old. His mother was Jochebed, Rashi's daughter. (Rashi had no s...

Rabbi Yaakov ben Meir Tam, known as the "Rabbenu Tam," was one of Rashi's illustrious grandsons. During the Second Crusade, on the second day of the holiday of Shavuot, the Crusaders entered his hometown of Ramerupt, and pillaged and massacred many Jews. ...

Rabbi Yaakov ben Meir of Ramerupt (1100?-1171), known as "Rabbeinu Tam", was a grandson of Rashi (Rabbi Shlomo Yitzchaki, 1040-1105), and one of the primary authors of the Tosaphot commentary on the Talmud; the Bet-Din (rabbinical court) he headed was reg...

Overview of the major Ashkenazi rishonim.

You've touched on a subject which is discussed at great length in various sources in Jewish literature. There are differing opinions on the halachic definition of sundown, and the 12th century French Talmudic scholar Rabbeinu Tam is renowned for his opini...