Henry I of Castile

Henry I of Castile (14 April 1204 – 6 June 1217) was the youngest son of Alfonso VIII and Eleanor of England. He became king in October 1214, aged ten. His sister Berengaria ruled as regent until the Lara faction forced her to hand government to Count Álvaro Núñez de Lara in 1215.

Álvaro arranged his marriage to Mafalda of Portugal, which Berengaria had annulled. In June 1217 Henry was killed by a falling tile loosened by a playmate, aged thirteen; Berengaria then took the throne.