Zumalacárregui, Tomás de (tōmäsˈ dā sōˌmäläkärˈrāgē) [key], 1788–1835, Spanish Carlist general. A professional soldier, he fought against the French in the Peninsular War (1808–14) and supported the absolutist cause during the disturbances of 1820–23. When King Ferdinand VII died (1833), Zumalacárregui supported the claim of Ferdinand's brother Don Carlos to the throne (see Carlists). Put in command of the Carlist army in 1834, he distinguished himself as master of both regular and irregular warfare. He was undefeated until his death in the siege of Bilbao (1835).