author
Known for a rare nautical work on Cape Verde, this Portuguese-language author left behind a detailed guide for sailors and mapmakers. His surviving book stands out as a practical, historical look at the islands and their waters.

by F. A. (Francisco Antonio) Cabral
Very little biographical information about Francisco António Cabral appears to be readily confirmed in the sources found during this search. He is credited in library and public-domain book records as F. A. Cabral, or Francisco António Cabral.
He is known for Memoria hydrografica das ilhas de Cabo Verde, a Portuguese work connected with charts of the Cape Verde Islands and reissued in public-domain collections. The book presents hydrographic and navigational information about the islands, suggesting an author with strong practical interest in maritime description and navigation.
Because reliable personal details such as birth dates, career history, or family background were not clearly confirmed from the sources reviewed, it is safest to remember him through this surviving work: a focused contribution to the historical literature of seafaring and Atlantic geography.