Manuel Cipriano da Costa

Project Gutenberg identifies Manuel Cipriano da Costa as the author of Quanto basta a respeito do dia 25 de abril de 1828 and dates him simply as "-1834," so he appears to have died in 1834. The book is a Portuguese historical and political text centered on the crisis of 1828 and the proclamation of Miguel de Bragança as king.

From the surviving description of the work, he wrote as a defender of that turning point, arguing for its legitimacy and placing it within earlier Portuguese precedents. That makes him notable not just as a chronicler of events, but as a partisan voice from a deeply contested period in Portuguese history.

Reliable biographical details beyond his authorship, subject matter, and death year were not clearly confirmed in the sources I found, so this profile stays close to what can be verified.