Avrohom Yaakov Friedman (October 28, 1820 – September 12, 1883) was the first Rebbe of the Sadigura Hasidic dynasty. He lived in the palatial home constructed by his father, Rabbi Yisrael Friedman of Ruzhyn, who fled to the Austrian town of Sadhora (Sadigura in Yiddish) due to persecution by the Russian Tsar. He maintained his father's extravagant lifestyle while immersing himself in Torah study and mysticism. He was considered the greatest Rebbe of his era, attracting hundreds of thousands of Jews as well as prominent Christian leaders to his court.
