What is XXX's brothers name?
Gabriel Aivazovsky
Gabriel Aivazovsky (Gabriel Ayvazyan, Armenian: Գաբրիել Հայվազյան, Russian: Гаврии́л Константи́нович Айвазо́вский), (22 May 1812 -- 20 April 1879), was an Armenian Archbishop, scientist, historian, and the brother of the artist Ivan Aivazovsky.
Ivan Aivazovsky