Wer datete Antón de Luna?

Antonio de Luna y de Xérica (deceased in Mequinenza, Aragón, in 1419) was an Aragonese nobleman, Lord of Almonacid, Loarre, Morés, Pola and Rueda. He was leader of the supporters of James II of Urgell in the Kingdom of Aragon after the death without sons of Martin I of Aragon.