His son, Scipione Piattoli (10 November 1739 – 12 April 1809) was a priest, of the Piarist order, an educator, writer and political activist, and a major figure of the Enlightenment in Poland.^[1] His altarpiece of San Procolo heals a boy is displayed on the main altar of San Procolo, Florence. Gaetano trained with a French painter, Francesco Rivera, who lived in Livorno.^[2]

Gaetano's wife Anna was a pastel artist, and his son Giuseppe Piattoli was also a painter.^[3]