Bertrand having thus placed Henry of Trastamare on the throne, urged him to send for his wife Jeanne, that they might both be crowned the same day. And when the Queen was seen approaching the capital, Bertrand went out to meet her, accompanied by the bravest of his knights. As soon as the Queen perceived that it was Du Guesclin who was advancing towards her, she alighted from her mule that she might render him the greater honour, and turning to his whole company, she exclaimed, "Friends, and gentlemen, it may truly be said that we hold the crown of Castille through you alone." Henry and Jeanne were crowned at Burgos on Easter-day of the year 1366, and the King, in gratitude for the services of Du Guesclin, gave him the Duchy of Molina, and made him constable of Castille.
Pedro meanwhile was in great terror at the approach of his brother, and kept himself concealed with his treasures in a forest a hundred leagues long. One of his treasures was a table of pure gold, inlaid with jewels, and engraven with the portraits of Charlemagne's twelve peerless knights. Amongst the gems was a carbuncle, which is said to have had the peculiar property of shining by night as brightly as the sun shines by day; and one very dark night, when Pedro was outside the walls of a city, and beset with dangers on every side, he was obliged to have his table fetched out from among his treasures, that he might discover by its light the means of escape. The stone may have possessed a singular brilliancy, but for the fact of its shining as brightly as the sunlight, I cannot vouch. It was said to have another strange property, that of changing colour and turning black directly poison approached it.
The forest was near the town of Cardonna, where Pedro had taken refuge, immediately after the great city of Toledo had surrendered to his brother. Henry supposed him to be still in the town, and went in pursuit of him with Du Guesclin, Hugh de Caverlay, Olivier de Mauny, and many other valiant men. Their way between Toledo and Cardonna lay through the long forest, which was full of wild beasts and snakes, and had neither villages nor houses of any kind in its depths. They were in this wild tract seven days, and lost many of their men there; some of them being devoured by the wild beasts, and others dying from the bites of the snakes. When they got to Cardonna they found, of course, that Pedro had fled, but they took possession of the town.
Now that Henry had really been placed on the throne, Bertrand thought he might carry out his original plan, and proceed to Granada, which was the stronghold and capital of the Moors in Spain. The Queen, however, with many tears implored him not to forsake her husband; she dreaded so much the anger and cruelty of Pedro, when he should come out of his hiding-place. And Pedro soon made himself dreaded once more, for he had found his way to Guienne and entreated the Black Prince, who held his court in that province, to protect him, and assist him with troops; and had offered him his golden table, and part of his treasures as an equivalent for his aid; promising him, besides, a large sum of money to defray the cost of an army. The Black Prince, either out of compassion for the fallen King, or because he did not like to see his rival in league with France, agreed to assist him; and in the spring of the year 1367 crossed the province of Navarre with Pedro, and a large army of Gascons, Normans, and English, and entered Castille.
The fortunes of Henry already began to decline: several of the Companies withdrew from his service, and enlisted themselves in preference under the banner of the Black Prince. Du Guesclin urged the King not to risk a decisive battle too soon, but he would not listen to him, and the two armies met at Najara, on the right bank of the river Ebro. The watchword of the Black Prince's army was "Guienne and St. George!" and that of King Henry's, "Castille and St. James!"
The battle proved disastrous for the King of Castille, his cavalry were forced to give way, and the rout becoming general he escaped from the field with very few of his followers. When Bertrand saw the King's discomfiture, he stationed himself against a wall, and with a battle-axe defended himself so vigorously that several Englishmen were overthrown by him; and at last his enemies dared not approach him, but only hurled at him their daggers and swords. The Black Prince, hearing of this, desired to see him, and went with his standard unfurled to the place where he stood. Bertrand recognised the Prince, and kneeling on one knee before him said, "To you, Sire, the Prince of Wales, I surrender myself and to no other; for I will never be the captive of Pedro, e'en though I die in my defence!"
The Prince received the submission of Du Guesclin graciously, and confided him to the keeping of the Captal de Buche, who in remembrance of his own capture by Bertrand in the battle of Cocherel, told him kindly that he might live with him at large, if he would give him his word not to escape. Du Guesclin, much pleased with the confidence reposed in him, swore, like a true knight, that he would rather die than break his word.
For six months he remained with the English army, and during that time had no cause to complain of his treatment. But as soon as he arrived at Bordeaux, where the Black Prince held his splendid Court, he was shut up in the prison of Hâ. One morning whilst he was there, three pilgrims, who had arrived in Bordeaux the evening before, had gone to hear mass in the Church of Notre Dame. One of these pilgrims was Henry of Trastamare, who had disguised himself thus in the hope of journeying safely to the Duke of Anjou, to entreat him to support his cause.
Several knights happened to be in the church, who had fought with Du Guesclin in the battle of Najara; they began talking of their common misfortunes, and Henry, taking one of them apart, asked news of Bertrand, and learned with sorrow that the Black Prince had made a vow never to ransom him or set him free. Henry went home with the knight to whom he had spoken, and told him who he was, and persuaded him to procure him the means of seeing Du Guesclin. So the knight concealed the King in his house, and went to the prison of Hâ, and told the gaoler that he was going to Bretagne to seek for money to pay his ransom, and that he greatly desired to see Du Guesclin before he started.
The gaoler did not admit him at once, but only hinted that such things were not done without a bribe. The knight assured him that Du Guesclin was most liberal, and would amply reward him if he would procure the interview. The gaoler owned that he was so proud of his prisoner, that he hoped such a man might never go out of his hands, and after a little more delay he conducted the knight to Bertrand, who thought that his visitor had come to borrow money, and was much surprised to hear that Henry of Trastamare was in Bordeaux in the disguise of a pilgrim of St. James. He called the gaoler, and told him that there was a poor pilgrim in the city, a native of Bretagne, and one of his own vassals, whom he wished to assist with money to enable him to complete his journey; and he begged him to take his seal and go to a certain Italian jew in the city, and ask him for the sum of 400 florins. The gaoler fetched the money; Du Guesclin gave him a hundred florins for himself, and by noon the King was admitted into the prison. A more sumptuous dinner than was usually seen within its walls was served in his honour, and they lingered over it, talking of their misfortunes and of the King's project for seeking aid from the Duke of Anjou; Du Guesclin would not, however, on any account suffer him to ask the duke to pay his ransom. Whilst they were at dinner the gaoler began to feel the pricks of his conscience, and he took his wife apart, and told her that he suspected some treason was going on between the pilgrim and Du Guesclin against his master the Black Prince, and that he must acquaint him with the whole affair. The gaoler's wife whispered her husband's intentions to Bertrand, and the brave knight, with a dexterity similar to that he had employed, when as a boy he freed himself from the dungeon of La Motte, did not suffer his keeper to pass through the prison wicket, but dealt him so heavy a blow with a stick that the poor man fell on his knees: then taking the keys from his pocket, he opened the door to Henry, who quickly disappeared with his two companions and the knight who had accompanied him thus far. Bertrand closed the door upon them, and keeping the keys, came back to the gaoler and, after giving him a good beating, shut him up in a room by himself, as a warning that the transaction was not to be breathed beyond the prison walls.