Aristotle_Fioravanti
Ridolfo "Aristotele" Fioravanti (c. 1415 or 1420 in Bologna – c. 1486 in Tsardom of Russia) was an Italian Renaissance architect and engineer, active in Muscovy from 1475, where he designed the Dormition Cathedral, Moscow during 1475–1479.
His surname is sometimes given as Fieraventi. Russian versions of his name are Фиораванти, Фьораванти, Фиеравенти, Фиораванте.