Alsarot (nephew to the pagan king Marsli) takes part in the battle of Roncesvalles, as represented by Cân Rolant. He rather haughtily challenges Rolant to singular combat.

And when Rolant heard his presumption, he did not take it other than badly. And he turned the point of his lance toward him, with his horse at full gallop, and struck him fiercely with his full strength so that he pierced the coat of mail and the other armor and the flesh and the skin and the bones of the back and the breast; and he lifted him up off his horse and held him upon his lance like a pennon, suspended and hanging, to hurl him down dead from there, dispatching him with these words: "Suffer death, infidel, and your pride with you! - and Chiarlymaen is not foolish, nor was it for ill that he consigned the custody of his host to me; for today neither the fame of the Franks nor their glory will diminish... Fall upon the infidels there, mighty barons! God has granted us this destiny with the first opportunity - and we can recognize that the victory and the triumph are ours in the future, as long as justice is fighting for us."