The _Autos_, or spiritual dramas, contained in the collected works of this poet, are sixteen in number. They cannot properly be called _Corpus Christi_ pieces, or _Autos Sacramentales_; for most of them were written to be performed on Christmas night, in celebration of that festival, either before the court at Lisbon, or at royal residences in the country, and they perfectly correspond with the object for which they were intended. Pastoral poetry forms the basis of the whole, even of those which, taking a totally different turn from the rest, become alternately didactic and allegoric. By this characteristic feature they are distinguished from most of the Autos of Spanish or posterior origin. Accident favoured the national poetic genius of the Portuguese in the creation of the spiritual pastoral drama. Gil Vicente while yet a youth and a tyro in the poetic art, surprised King Emanuel and the Queen on the birth of the Infante, afterwards King John III. by the production of a little pastoral drama, which appears better adapted for celebrating the festival of Christmas than the birth of a hereditary prince, but which was, perhaps, on that very account the more flattering to the royal family. This pastoral drama is, in consequence of the distinction it thus obtained, placed before Vicente’s Autos, and a notice by the son of the poet explains the reason why that precedence is assigned to it. The little piece is written in the Spanish language. Vicente’s son observes in his notice, that it was received with particular favour because it was something new in Portugal.[84] It is therefore probable that at this period Gil Vicente, as yet unconscious of his own talent, only followed in the footsteps of the venerable Juan del Enzina.[85] Having at the request of the royal family altered his piece in such a way as to render it more suitable to representation at Christmas, he was thus accidentally directed into the path which naturally led to the union of dramatic poetry with christian mysteries, and which he afterwards steadily explored. Year after year with increasing taste and fancy he continued to write Christmas pieces, which at last assumed a more enlarged form. Among the personages introduced in these dramas there are always some of the pastoral class, intended to represent directly, and also in a certain degree allegorically, the shepherds at the manger of Bethlehem. But the inventive poet soon advanced a step further. He composed dramas in the same style for the celebration of other religious festivals, without any admixture of pastoral poetry. Among his Autos, however, there is one in celebration of the festival of Corpus Christi, which was one of his earliest productions. The notice annexed to it states that it was performed in the year 1504. It is founded on a simple incident in the life of St. Martin, and possesses scarcely any thing of the character of the later spiritual dramas, or _Autos Sacramentales_, properly so called.