The Mabinogion

Since thou wilt not remain here, chieftain, thou shalt receive the boon whatsoever thy tongue may name, as far as the wind dries, and the rain moistens, and the sun revolves, and the sea encircles, and the earth extends; save only my ship; and my mantle; and Caledvwlch, my sword; and Rhongomyant, my lance; and Wynebgwrthucher, my shield; and Carnwenhau, my dagger; and Gwenhwyvar, my wife

So they took the blossoms of the oak, and the blossoms of the broom, and the blossoms of the meadow-sweet, and produced from them a maiden, the fairest and most graceful that man ever saw. And they baptized her, and gave her the name of Blodeuwedd.

often dost thou utter that with thy tongue which thou wouldst not make good with thy deeds.

And then Gwalchmai said, ‘No one should distract an ordained knight from his thoughts in a discourteous way, for perhaps he has either suffered a loss or he is thinking about the woman he loves best.

At that time Math son of Mathonwy could not live unless his feet were in the lap of a virgin, except when the turmoil of war prevented him.

So they declared a new emperor. And he sent a threatening letter to Maxen. However, it was not so much a letter as ‘If you come and if you ever come to Rome!’ That letter and the news came to Maxen in Caerllion. And from there he sent a letter to the man who claimed to be emperor of Rome. There was in that letter, too, nothing but ‘If I go to Rome, and if I go!