1911 Encyclopædia Britannica, Volume 15… (1911)
“ On the death of his father-in-law in 1383, John endeavoured to enforce the claims of his wife, Ferdinand’s only child, to the crown of Portugal. He was resisted by the national sentiment of the people, and was utterly defeated at the battle of Aljubarrota, on the 14th of August 1385. King John was killed at Alcalá on the 9th of October 1390 by the fall of his horse, while he was riding in a fantasia with some of the light horsemen known as the farfanes, who were mounted and equipped in the Arab style. ”
