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            Artworks  JUAN BAUTISTA MARTÍNEZ DEL MAZOPORTRAIT OF PRÍNCIPE DON FELIPE PRÓSPERO, PRINCE OF ASTURIAS (1657-1661), c.1659oil on canvas113 x 105 cm;
 44 1/2 x 41 3/8 in.ProvenanceSir John Campbell, 2nd Marquess of Breadalbane (1796-1862), Taymouth Castle (and possibly previously in his apartments at Holyrood House, Edinburgh);
 By descent to his sister, Lady Elizabeth Pringle (d. 1878);
 By descent to her daughter, the Hon. Mrs. Robert Baillie-Hamilton, Langton, Duns, near Berwick, Scotland (d. 1912);
 By descent to her sister, Magdalen, Lady Bateson Harvey (d. 1913);
 By descent to Lt.-Col. the Hon. Thomas George Breadalbane Morgan-Grenville-Gavin D.S.O., M.C. (the great-nephew by marriage of Sir Robert Bateson Harvey), Langton, Duns, Berwickshire;
 His sale, London, Christie's, 27 March 1925, lot 169, for £48–6s. to R. Warner;
 With Sackville Gallery, London;
 With Duits Gallery, London, 1936;
 Count Alessandro Contini Bonacossi (1878-1955), Florence;
 Anonymous sale ('Property from a Private Collection'), London, Sotheby's, 6 December 2007, lot 247;
 Private Collection;
 Sale, London, Sotheby’s, 6 December 2018, lot 191.LiteratureA. de Beruete, Velázquez, London 1906, p. 161.
 W. Gensel, Velázquez, Stuttgart 1913, p. 221.
 A.L. Mayer, Diego Velázquez, Berlin 1924, cat. no. 305, reproduced.
 J. López-Rey, Velázquez, London 1963, p. 235, cat. no. 335, reproduced pl. 310 (as 'Workshop of Velasquez').
 J.C. Aznar, Velázquez, vol. II, Madrid 1964, p. 880.
 P.M. Bardi, L'opera completa di Velázquez, Milan 1969, p. 108, cat. no. 122A, reproduced.
 A.E. Pérez-Sánchez & N. Spinosa, Velázquez a Capodimonte, exh. cat., Naples 2005, p. 114.
 C. Garrido, Velázquez. El fluir expresivo de su pintura, Lleida 2022, pp. 258, 267.
