What title is held by XXX?
Andrei Rublev
Andrei Rublev (Russian: Андре́й Рублёв; IPA: (ɐnˈdrʲej rʊˈblʲɵf), also transliterated as Andrey Rublyov; born in the 1360s, died 29 January 1427 or 1430, or 17 October 1428 in Moscow) is considered to be the greatest medieval Russian painter of Orthodox icons and frescos.