João de Lisboa

He is known to have sailed together with Tristão da Cunha, and to have explored Río de La Plata and possibly the San Matias Gulf, around 1511-12.

The Brazilian historian Francisco Adolfo de Varnhagen erroneously stated that he was in Ferdinand Magellan circumnavigation voyage.

[1] He is the author of a Treatise on the Nautical Needle, dated 1514, which is extant in a later copy included in an undated (ca.

The 20 charts present: The book can be found in Torre do Tombo National Archive (Colecção Cartográfica nº166), with an additional information that the maps are made of parchment.

For instance, it shows the Magellan Strait or Japan (which was only reported by the Portuguese in 1543).