Libro de Alexandre

[1] It is largely based on the Alexandreis of Walter of Châtillon, but also contains many fantastical elements common to the Alexander romance.

It was once owned by the Duke of Osuna (whence O) and was known to Íñigo López de Mendoza, 1st Marquess of Santillana.

The fragment G′ is named after Gutierre Díez de Gamés, who included stanzas from the first part of the Libro in his early fifteenth-century Victorial.

However, it must postdate 1178, the earliest year when Walter completed the Alexandreis, and predate 1250, the approximate date of the Poema de Fernán González, which it influences.

Structurally the Libro is a chronological story of Alexander's life set between an introduction in six stanzas and a conclusion in seven.