 Alkan Morhange supported the family as a musician and later as the proprietor of a private music school in le Marais , the Jewish quarter of Paris . At an early age , Charles @-@ Valentin and his siblings adopted their father 's first name as their last ( and were known by this during their studies at the Conservatoire de Paris and subsequent careers ) . His brother Napoléon ( 1826 – 1906 ) became professor of solfège at the Conservatoire , his brother Maxim ( 1818 – 1897 ) had a career writing light music for Parisian theatres , and his sister , Céleste ( 1812 – 1897 ) , was also a pianist . His brother Ernest ( 1816 – 1876 ) was a professional flautist , while the youngest brother Gustave ( 1827 – 1882 ) was to publish various dances for the piano . 
