Elhanan ben Isaac of Dampierre
Elhanan ben Isaac Jaffe of Dampierre (Hebrew: רבי אלחנן בן יצחק; d. 1184) also known as Rabbeinu Elhanan was a 12th-century French Tosafist and the son Isaac ben Samuel. He is mostly known for his numerous commentaries on the Talmudic tractates, Avodah Zarah and Yoma among other notable commentaries. He is also the founder of the Jaffe family. 
Born in Dampierre, France, his father was the head of the Dampierre Yeshiva. Rabbi Elhanan had several illustrious pupils, such as Judah ben Isaac Messer Leon. His tosafot are numerous and were often quoted by contemporary scholars, and are mentioned in "Minḥat Yehudah", "Shibbole ha-Leḳeṭ" and Rambam's "Sefer Hafla'ah". He is also credited for two works of his own: "Tiḳḳun Tefillin" - a treatise on Tefillin, and several piyyutim related to passover. Rabbi Elhanan was martyred in 1184.  
- "ELHANAN BEN ISAAC OF DAMPIERRE". Academic Dictionaries and Encyclopedias. Retrieved 2020-06-04.
- "ELHANAN BEN ISAAC OF DAMPIERRE - JewishEncyclopedia.com". www.jewishencyclopedia.com. Retrieved 2020-06-04.
- "Elhanan ben Isaac of Dampierre | Encyclopedia.com". www.encyclopedia.com. Retrieved 2020-06-04.
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