Jorge Manrique (Paredes de Nava, Palencia, or Segura de la Sierra, Jaén, c. 1440 Santa María del Campo, Cuenca – 24 April 1479) was a major Castilian poet, whose main work, the Coplas a la muerte de mi padre (Verses on the death of Don Rodrigo Manrique, his Father), is still read today. He was a supporter of the queen Isabel I of Castile, and actively participated on her side in the civil war that broke out against her half-brother, Enrique IV, when the latter attempted to make his daughter, Juana, crown princess. Jorge died in 1479 during an attempt to take the castle of Garcimuñoz, defended by the Marquis of Villena (a staunch enemy of Isabel), after Isabel gained the crown.