Who married Princess Maria Carolina of Bourbon-Two Sicilies (1820–1861)?

Princess Maria Carolina Ferdinanda of Bourbon-Two Sicilies (29 November 1820 – 14 January 1861) was a princess of the House of Bourbon-Two Sicilies and an infanta of Spain through her marriage to Infante Carlos, Count of Montemolin, Carlist claimant to the throne of Spain under the name Carlos VI. Maria Carolina was a daughter of Francis I of the Two Sicilies and his second wife Maria Isabella of Spain.

Carlos Luis María Fernando de Borbón y Braganza (Madrid, 31 de enero de 1818-Trieste, 13 de enero de 1861),​ conde de Montemolín, fue un pretendiente carlista al trono de España, bajo el nombre de «Carlos VI». Era hijo de Carlos María Isidro de Borbón y de María Francisca de Braganza.