1783 Queen Maria Carolina of Naples and Sicily and King Ferdinand I with their children by Angelica Kauffman (National Museum of Capodimonte - Napoli Italy)
From Wikimedia.
This is probably a copy of the last portrait or that one is a copy of this one. The King and his son have shed their order sashes and the colors are much brighter.
Keywords: 1783, Kauffman, Queen Maria Carolina, Archduchess, Queen, Habsburg family, Bourbon family, Italian, long bouffant coiffure, cap, square neckline, jacket, elbow length full sleeves, full skirt, shoes