Prince Juan, Count of Montizón

DonJuan Carlos María Isidro de Borbón (15 May 1822 – 18 November 1887) was the Carlist claimant to the throne of Spain from 1860 to 1868, holder of the Legitimist claim to the throne of France from 1883 to 1887, and was a possible candidate to the Mexican throne before the establishment of the Second Mexican Empire in the 1860s.