Claudio Mamerto Cuenca (30 October 1812 – 3 February 1852) was an Argentine physician and poet. The Spanish mercenary (who called himself "León de Palleja"), who belonged to the Grand Army of General Justo José de Urquiza who fought Rosas in 1852, killed him to saber blows because Cuenca wanted to protect the wounded in his field hospital, immediately after the battle of Caseros.