Son of Rav Yekusiel Yehuda Teitelbaum, author Yetev Lev. Born in Gorlitz (1834) תקצ"ד. A scion of the Uhjel dynasty. Son-in-law of Rav Yechiel Rubin of Kolbosov, scion of the Ropshitz dynasty.
In his youth, Rav Avrohom Aharon enjoyed the presence of his grandfather, the author of Yismach Moshe. While still quite young, he earned semichah from Chanina Yosef Meisels, Av Bies Din of Premisla and Rav Nachum Yoel Halperin, Av beis Din of Reisha.
His fiery tefillos were tempered by his beautiful voice and the result was a heartfelt davening that earned him many followers. He succeeded his father-in-law as rebbe of Kolbosov despite those who backed his brother-in-law, the Yenuka-- Rav Asher Yeshaya Rubin.
He left behind sons: Rav Yechiel of Kolbosov who publicized his father’s moving will when he eulogized his father (it captured the great humility and tznius of the tzaddik and was later published under the title, Misped Rav in Lwow, תרע"א; Rav Dovid of Etshed; and a daughter who married Rav Moshe Dovid Ashkenazi of Stanislow-Lwow.
Rav Avrohom Aharon passed away on 12th of Elul, 1910 (תר"ע).
