The controversial change which Ferdinand VII of Spain made to the law in order to allow his daughter Isabella to succeed him instead of his brother, Carlos María Isidro de Borbón, gave rise to Carlism, a movement supporting Carlos's claim to the throne. It also sparked off a series of armed conflicts. The First Carlist War (1833-1839) was declared by Carlos when Isabella came to the throne, the Second (1860) was started by his son of the same name, and the Third (1872-76) by a grandson, another Don Carlos. The last Carlist pretender, Alfonso, died in 1936 without descendants, although that did not prevent the Falange Española from later backing the Carlist cause in an attempt to prevent the current king, Juan Carlos, being designated Franco's successor. To this day there is still a Carlist party in Spain.
note See culture box in entry falange.