Rabbi Avraham Yissachar Dov was also a great Torah scholar and was musically gifted .
Upon the Rebbe 's death in 1866 , his youngest son , Avraham Yissachar Dov Hakohen Rabinowicz ( 1843 -- 1892 ) , succeeded him .
Avraham Yissachar Dov Hakohen Rabinowicz       was also a great Torah Avraham Yissachar Dov Hakohen Rabinowicz and was musically gifted .
Upon the Rebbe 's death in 1866 , his youngest son , Avraham Yissachar Dov Hakohen Rabinowicz ( 1843 -- 1892 ) , succeeded him .