In 1555, the Nicolas Durand de Villegaignon (A French naval officer, and French gov. representative)founded a settlement
within Guanabara Bay, in an island in front of today's Rio de Janeiro. The colony
, named France Antarctique, led to conflict with Governor General Mem de Sá, who waged war against the colony in 1560. Estácio de Sá, nephew of the Governor, founded Rio de Janeiro in 1565 and managed to expel the last French settlers in 1567.
Another French colony
, France Équinoxiale, was founded in 1612 in present-day São Luís, in the North of Brazil. In 1614 the French were again expelled from São Luís by the Portuguese.https://en.wikipedia.org/wiki/Colonial_Brazil