According to Professor Ephraim Orbach in his seminal book “Ba’alei Hatosafot”, pages 615-616, the Tosfot on Eiruvin were probably compiled in the middle 1300s, by a talmid of Rav Yitchok of Tresson, who was a talmid of Rabeinu Peretz and the Rosh. Another possibility is Rav Yitzchok of Keinon (sp.?). Prof. Orbach mentions curious possible references to the Black Plague (21: d”h amru) , which began in 1348.
Menu