João Teixeira Albernaz I

His works include nineteen atlases, a total of two hundred and fifteen maps.

He stands out for the variety of themes, which record the progress of maritime and land exploration, particularly in the Portuguese colony of Brazil.

On 29 October 1602 he got his licence as master for "Nautical charts, astrolabes, compass needles and cross-staff", having been examined by the royal chief-cosmographer, João Baptista Lavanha.

In the late seventeenth century, in an opinion issued by Manuel Pimentel about the 1642 Atlas of Brazil, warns that errors in the first chart of this Atlas, which did not respect the boundary agreed between Portugal and Spain, concluding that the book was "no more than good paintings and illuminations".

His work is of great interest both for its breadth and variety, and for the record of the progress of discovery and Portuguese maritime and overland exploration, particularly with regard to Brazil.