Rav Shmuel Aharon Rubin was born about 5584/1824. His father was Rav Tzvi Elazar, a Dayan in Cracow. He was a descendant of (and named after) Rav Shmuel Aharon of Kaidonov.
He learned under Rav Moshe Wolf Frenkel, Rav of Pshevorsk and mechaber of Meishiv KaHalacha. After his marriage, he settled in Brigel where his father-in-law lived, and became close to Rav Aryeh Lifschitz, the Aryeh D’Bei Ila’i. Following the petira of the Aryeh D’Bei Ila’i, he traveled to the court of the Divrei Chaim of Sanz.
Rav Shmuel Aharon was also close with the leading Poskim of his time, especially Rav Yosef Shaul Natansohn, who wrote him many halachic responsa and gave a warm haskoma to his sefer Bais Aharon on Hilchos Gittin.
In 5625/1865, Rav Shmuel Aharon was appointed Rav of Zvarow, and a short while later, of Kartshin. The Divrei Chaim, together with Rav Tzvi Hirsch of Rimanov, wrote a letter to the kehilla of Kartshin in praise of their new Rav.
Rav Shmuel Aharon wrote several seforim: Bais Aharon on Gittin; Haggada Shel Pesach Lachma Anya; a commentary on P’sikta Rabbosi; She’eilos U’Teshuvos Shem Olom; Droshos Bais Aharon and others.
He was niftar on the 27th of Tammuz, 5637/1877, in Karlsbad, and buried in Cracow, near the kever of his father. Zecher tzaddik livrachah.
