Moreover, Thomas' great-grandson was Ivan IV of Russia, the first emperor (tsar) of Russia to be crowned as such (the imperial title had already come into use by Ivan III and his son Vasili III of Russia).
Ademais, o bisneto de Tomé foi Iván IV de Rusia, o primeiro tsar de Rusia en ser coroado de tal forma (o título imperial xa fora usado durante os reinados de Iván III e do seu fillo Basilio III de Rusia).