John Holland

John of Gaunt, as I have already mentioned, had in mind the idea of a negotiation to get money.
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" Una parte de las fuerzas, mandadas por sir John Holland, regresó a Gascuña con sorprendente salvoconducto de Juan I para atravesar Castilla 45."

The second key date is 5 July 1387 when he was given a safe-conduct to accompany his friend William Beauchamp to Calais.He may have gone to meet his patron who travelled from the port of Lisbon to Bayonne.If the records about his wife had disappeared after 18 June 1387 and she was dead, was this travel concerned it?
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I reject, as Lawrence( 1940) does, Hotson's (1967) interpretation considering the tale as a political tract to dissuade John of Gaunt from invading Castile in 1386.
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Chaucer's text was not created to teach or to advise John of Gaunt, Chaucer's patron and his actions may have been Chaucer's source of inspiration.
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John of Gaunt learnt by experience the difficult theme of peace versus war.After the truce of 1375 in France, everybody held him responsibile for the disaster because England lost many territories.

The Duke of Lancaster's trajectory in the intervention is a succession of failed attempts; he gets money and his daughter's marriage.

When he arrived at Galicia on August 25 1386 "He hasketh wel that wisely kan abyde " (VII, 1054).So he decided to play the role of Melibee and followed "Prudence": The king of Portugal and he would wait until the next March, 1387 to begin the attack.But why did not he invade Spain before?
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It is clear that John of Gaunt was called "king of Castile" by his partisans as Ayala shows.
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It is at the end of the book where there more biographical elements of John of Gaunt 47.
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I consider the hunting as an allegory of John's of Gaunt's attempt to invade Spain at that time (1374).
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But, in my opinion, Chaucer might be aware of the negotiations between John of Gaunt and the king of Castile in 1386.
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Within this debate, in 1386, the bishop John of Aquis, following Ayala (J.L. Martmn ed.
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Seemingly, John of Gaunt claimed the crow of Castile but what he was conscious of being able to get was money and a little more.
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The English Intervention in Spain and Portugal in the Time of Edward III and Richard II, (Oxford, 1955); ARMITAGE-SMITH, S., John of Gaunt: King of Castile and Leon; Duke of Aquitane and Lancaster; Earl of Derby, Lincoln, and Leicester; Seneschal of England.
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London: Constable & Co., 1964; GOODMAN, A., John of Gaunt: the Exercise of Princely Power in Fourteenth-Century Europe.New York: St. Martin's Press, 1992.
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13. " On the side of king Peter, the batle was planned as it follows: everyone was on foot, and the Duke of Lancaster, who was called John, the prince's brother, was in the vanguard with the knight John Chandos, who was the military chief of Guiana, and Raul Camois, and Sir Hugh Calveley, and Oliver, lord of Clison, and other many knights and squires from England and Brittany."
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41. " The Duke sent a knight, who was called Thomas Percy, to the king of Castile, and there they treated the marriage of the infant Henry, the son of king John, with Catherine, daughter of the Duke of Lancaster and Constance, his wife."
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42. "secretamente" shows John of Gaunt's diplomatic strategy.
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ARMITAGE-SMITH, S. 1964: John of Gaunt: King of Castile and Leon; Duke of Aquitane and Lancaster; Earl of Derby, Lincoln, and Leicester; Seneschal of England.
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GOODMAN, A. 1992: John of Gaunt: the Exercise of Princely Power in Fourteenth-Century Europe.St. Martin's Press, New York.

HALLIDAY, M.A.K. 1985: An Introduction to Functional Grammar.