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  1. Rabbeinu Mordechai ben Hillel was a student of Maharam Rotenberg, descendant of Ra'avan, son in law of Rabbenu Yechiel MiParis, and brother-in-law of the Sefer Mitzvot Kattan and Hagahot Maimoniot.[1]
  2. Most of the Mordechai commentary on the Rif is based on Tosafot,[2] primarily that of the Rash MiShantz[3]
  3. Unfortunately, the text of the Mordechai is home to many copyist errors and omissions,[4] so the Rama calls it "Megumgam uMelukat." Sometimes, we're missing statements attributed to him by other Rishonim from the text of the Sefer. Therefore, the Bach warns one cannot deduce much from his challenging articulations.[5]
  4. Even though they were colleagues, the "Rosh" quoted by the Mordechai does not refer to the Rosh, R' Asher ben Yechiel, but rather the Rosh MiFalise or MiLunelle.[6]
  5. Some say the Hagahot Mordechai are not by the Mordechai,[7] such as those on the Masechtot Ketanot.[8]


  1. Shem HaGedolim (Gedolim, Mem 80)
  2. Yad Malachi (Klalei She'ar Mechabrim 4)
  3. Shem HaGedolim (Gedolim, Mem 80)
  4. See Beit Yosef Orach Chaim Siman 382 at the end
  5. Yad Malachi (Klalei She'ar Mechabrim 5)
  6. Yad Malachi (Klalei She'ar Mechabrim 3)
  7. Shem HaGedolim (Sefarim, Heh 24)
  8. Menachem Tzion 133 to Shem HaGedolim (Sefarim, Mem 223)