Gregorio de' Ferrari
Ferrari, Gregorio de'
Gregorio De Ferrari Gregorio Deferrari
Possibly Gregorio de' Ferrari (Italian, 1644-1726)
or Domenico Piola (Italian, 1627-1703)
or Antonio Allegri, called Correggio (Italian, c. 1489-1534)
or Franz Anton Maulbertsch (Austrian, 1724-1796)