The present portrait of Carlota Joaquina, later Queen of Portugal was presumably acquired as a pair with a portrait of her husband Prince John of Brazil, later John VI of Portugal (RCIN 406047). They were both reframed in the nineteenth century in identical Thomas Ponsonby frames. The portraits appear to be nineteenth century copies of portraits by Giuseppe Troni, an Italian artist who became court painter in Lisbon after he moved to the city in 1785. This painting is after a full-length work by Troni in the Prado, Madrid, dated c.1787. The miniature she wears of her husband is closely related to the composition of RCIN 406047. She also wears the Order of the Starry Cross.