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Israel Yitzhak Kalish of Warka (Yitzchok of Vurka) (1779–1848) was the first hasidic rebbe of Warka.
In 1829 he moved to Przysucha, where his master tzadik Simcha Bunim of Peshischa was teaching. Eventually he settled in Warka. Together with rabbi Yitzchak Meir Alter from Ger, he coped with Russian ukases (decrees), prohibiting wearing traditional Jewish clothes.