Maria Isabel du Boubón, Queen of the Two Sicilies

María Isabel de Borbón (1789–1848) was the younger sister of Ferdinand VII and briefly Queen consort of the Two Sicilies through her marriage to Francis I. López Portaña's 1829 portrait of her at the Fitzwilliam Museum belongs to the series of Bourbon royal portraits he produced across the reign of Ferdinand VII, when his position as First Painter obligated him to document the royal family across their various dynastic roles and relationships. As a princess who had been traded across the Bourbon dynastic network — Spanish crown, Neapolitan court — María Isabel embodied the political function of royal women in early nineteenth-century Europe. The Fitzwilliam's acquisition of this work reflects the international circulation of Bourbon royal portraiture beyond the Spanish peninsula.

Royal female portraiture demanded the most accomplished treatment of luxurious fabrics and dynastic jewels, and López Portaña deploys his full technical range on the queen's dress and ornaments. The face is modeled with the delicacy appropriate to a royal female subject, while the regalia communicates political status through precise rendering of specific dynastic symbols.