Then King Anguish and Sir Tristram took their leave and sailed into Ireland with great joy; and when they had arrived there, the king let make a great cry throughout his dominions, of the manner in which Sir Tristram had fought for him, and how for that deed he accounted him the noblest knight among his friends, and that all should treat him with friendship and no deceit.
When, also, the queen and the kin of Sir Marhaus heard how Sir Tristram had borne himself in the trial by combat, they agreed that now they should not seek to slay him, since his great help in this matter had wiped out his ill-doing in the slaying of Sir Marhaus.
So the queen and the knights of the court and the common people made much of Sir Tristram wheresoever he went; but the joy that La Belle Isoude had in her heart no tongue may tell. When Sir Tristram was led to her and they met after so long an absence from each other, men saw the lovely face light up with so sweet and high a look that they marvelled at her beauty. Yet they saw how straitly Sir Tristram held himself, and made not much of his meeting with her and did not seek her company.
Then on a day King Anguish asked Sir Tristram what was the boon he craved.
'But whatever it be,' said the king, 'it is yours without fail.'
Sir Tristram's face went hard and white, and after a little while he said:
'It is this, my lord. I bear a request from my uncle, King Mark, and it is that you give him your daughter La Belle Isoude for his wife, and ye let me take her unto him, for so I have promised him.'
'Alas,' said the king, and looked full heavily into the eyes of Sir Tristram, 'I had liefer than all the land that I have that ye should wed her yourself.'
Sir Tristram turned away, and made this reply:
'I have given my promise, and I were ashamed for ever in the world if I did aught else. I require you to hold to your promise, and to let your daughter depart with me to be wedded to my uncle, King Mark.'