Vida de Don Duarte de Meneses, tercero Conde de Viana, y sucessos notables de Portugal en su tiempo

A biographical narrative chronicles the life and military career of a prominent nobleman, tracing his origins, upbringing, and early skirmishes, followed by extended service on the North African frontier and notable victories that earned honors and civic recognition. The text alternates chronological episodes of campaigns, commands, and returns home with reflections on virtue, political prudence, and public duty, offering examples intended as moral and administrative instruction. Prefatory letters, official licenses, and dedications frame the work and emphasize the author's intent to preserve exemplary deeds for readers involved in governance.