On 14 Mar 1369 the army of Henry "Fratricide" II King Castile (age 35) defeated that of his half-brother Peter "Cruel" I King Castile (age 34) at the Battle of Montiel. Henry "Fratricide" II King Castile 1334-1379's army was commanded by Bertrand Geusclin (age 49). Peter "Cruel" I King Castile (age 34) escaped to the castle of Montiel, La Mancha.