Signed and dated bottom left: Duchâteau/ Pinxit/ 1779 (the last digit is barely visible).
Jean-François Duchâteau (d. after 1796); French painter active in Istanbul and connected with the diplomatic corps.
Antoni Łukasz Crutta (1727–1812), was born in Cyprus. The son on an Albanian father and Italian mother, he was clerk and translator/interpreter to the Venetian consulate in Larnaca. From 1765 he was in the service of Stanisław August as translator of oriental languages; he was made a nobleman in 1775.
Pendant to the portrait of his wife (ZKW/722/ab).