Question
Who wrote the Shaarei Teshuvah?
Answer
R.Chayim Mordechai b. Menachem Manis Margalios, author of the Shaarei Teshuvah, was Rav in Dubno and passed away on 16 Shevat 5583 (1823-4). The Shaarei Teshuvah was first published in an edition of the Shulchan Aruch Orach Chayim that appeared in Dubna in 5580.