Le Morte D'Arthur

So Sir Tristram departed, and took the sea, and with good wind he arrived up at Tintagil in Cornwall; and when King Mark was whole in his prosperity there came tidings that Sir Tristram was arrived, and whole of his wounds: thereof was King Mark passing glad, and so were all the barons; and when he saw his time he rode unto his father, King Meliodas, and there he had all the cheer that the king and the queen could make him. And then largely King Meliodas and his queen departed of their lands and goods to Sir Tristram.

Then by the license of King Meliodas, his father, he returned again unto the court of King Mark, and there he lived in great joy long time, until at the last there befell a jealousy and an unkindness betwixt King Mark and Sir Tristram, for they loved both one lady. And she was an earl's wife that hight Sir Segwarides. And this lady loved Sir Tristram passingly well. And he loved her again, for she was a passing fair lady, and that espied Sir Tristram well. Then King Mark understood that and was jealous, for King Mark loved her passingly well.