Some accounts claim that the Second Brazil…
January 1502 CE
Some accounts claim that the Second Brazil Expedition had passed Cape Sao Tome and gone on along the southern coast, with Coelho making the first European sighting of Guanabara Bay.
According to tradition, he enters it on January 1, 1502, and, thinking that it is a river, names it Rio de Janeiro ("river of January").
The region of Rio is inhabited by the Tupi, Puri, Aimoré (Botocudo) and Maxakalí peoples.