Spain, during the fifteenth century, was very prolific in writers of verse, as a glance at the Cancioneros of Baena, Castillo, Estuñiga, and a number of other early collections, both printed and manuscript, will show. That these were not all poets by divine right, no one perhaps will gainsay, nor would the world have suffered any great loss, if much of their verse had disappeared forever. In the time of Don Juan II. (1407-1454), himself a poet, it seemed to have been considered a necessary accomplishment of every courtier to write poetry, and as the Spanish language falls into measure and rhyme at the slightest provocation, the practice of such an accomplishment was fraught with little difficulty. Still, despite what has been said above, there is a charm about much of the poetry in these Cancioneros that is undeniable, and among their poets many names occur that will always occupy an honorable place in the literature of Spain. With perhaps a few exceptions, the best poetry in these collections is found in the short lyrical pieces. They are often delightfully naive, but necessarily suffer from sameness, love being the theme of most of them, and even this may become wearisome. But there were also poets, though in much lesser number, who turned their thoughts to things spiritual. Of these, two of the most famous were the Marquis of Santillana, and his kinsman Fernan Perez de Guzman, some of whose religious poems are here published for the first time. They are among the best verses that he has written, and are very fairly illustrative of his style and ability as a poet.