Gregorio di Lorenzo (Master of the Marble Madonnas), The Young Saint John the Baptist, c. 1470/1500, marble, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1273

Gregorio di Lorenzo (Master of the Marble Madonnas), Pietro Talani, 1490s, marble, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1244