His best known work, Claros varones de Castilia, presents a series of biographical sketches of some of the most important nobles and prelates of the era.
After the accession of Isabel he became a councilor of state, was charged with a mission to France, and in 1480 was appointed the official chronicler for the queen.
This work is commonly supposed to be propaganda for his patrons, Catholic Monarchs of Spain Queen Isabella and King Ferdinand.
[2] Pulgar's Claros varones de Castilla (1486), a series of portraits of eminent nobles, ecclesiastics, and men of learning, provides interesting insights into the court of Henry IV.
These portraits were published together with Pulgar's Letras (Burgos, 1486), a body of epistolary work composed of 32 letters directed to both well-known and anonymous correspondents.