Focus on Portrait of Camilla Gonzaga and Her Three Sons and explore the History.
It is mentioned in a 1686 inventory of the collections of the Royal Alcazar of Madrid, as the wife of the count of San Sigundo. The subject has been identified with Camilla Gonzaga, wife  of imperial general Pier Maria III de' Rossi basing on this note, and by another from 1630 by one of his descendants  about the existence of a portrait of him by Parmigianino.
The painting arrived in Spain in 1664, after King Philip IV had  supported to the Rossi family in a dispute with the  Farnese of Parma about some territories.  It has been dated from around   1539–1540, but the attribution to Parmigianino is controversial, the author having been identified also as an artist from Bronzino's workshop. It is possible that Parmigianino, who died in 1540, had not been able to finish the portrait, which was completed by another artist, perhaps basing on his sketch.
Philip IV Parmigianino Gonzaga Farnese Royal Alcazar of Madrid Madrid Spain Pier Maria III de' Rossi Bronzino Camilla Gonzaga