John I of Castile ^{1 2}

   Cause of his death was killed by falling off his horse.

   Another name for John was Juan.

  General Notes:

The son of King Henry II, founder of the house of Trastamara. John attacked Portugal to defeat the schemes of John of Gaunt, duke of Lancaster and son of Edward III of England, who had assumed the title king of Castile, and of King Ferdinand I of Portugal. Ferdinand submitted in 1382 and made peace, giving his daughter to John in marriage. On Ferdinand’s death in 1383, John again made war on Portugal, but was defeated at Aljubarrota in 1385 by King John I of Portugal. In 1386–87 he repulsed John of Gaunt’s invasion of Spain and settled their differences by a treaty and by arranging the marriage of one of John of Gaunt’s daughters to his son Henry, later King Henry III of Castile and León.

  Noted events in his life were:

• Acceded: 1379. King of Castile & León.

John married Eleanor of Aragón, daughter of Peter IV the Ceremonius of Aragón and Eleonor of Sicily, on 18 Jun 1375 in Soria. (Eleanor of Aragón was born on 20 Feb 1358 in Santa Maria del Puig and died on 13 Sep 1382 in Cuellar.)