In the mid-16th century, Guanabara Bay was territory disputed by the Temiminó and Tupinambá indigenous peoples. In 1555, a French expedition arrived there with colonizing intent. The Norman enterprise called for the establishment of France Antarctique. In the face of occupation attempts orchestrated by the Portuguese, the expedition led by Nicolas Durand de Villegagnon relied on more harmonious relations with the indigenous peoples.
In response to the French colonization, some strategic points of the bay were subsequently conquered and occupied by the Portuguese over those years. In 1566, a decision by the Portuguese Crown would culminate in the actions that determined the definitive conquest of the lands of Rio de Janeiro. That year, Mem de Sá, governor general of Portuguese America, left Salvador and joined his nephew Estácio de Sá, who had already been fighting for control of the lands of the Karioka River for two years. On January 20, 1567, the feast day of Saint Sebastian, combat took place at the village of Uruçumirim, a well-established settlement where the Morro da Glória stands today, occupied by hundreds of Tupinambás and a few French allies, survivors of the 1560 battle. Mem de Sá reported, in a document published later, that, even with the massive death toll among indigenous people and Frenchmen, many deaths were also counted among the "Christians."
Batalha das Canoas – Uruçu-Mirim – praia do Flamengo – 20/1/1567 – Estácio de Sá expulsa da baía Guanabara os calvinistas franceses – São Sebastião aparece lutando ao seu lado. Vitral do Santuário Basílica de São Sebastião Frades Capuchinhos, Tijuca. César Formenti, 1931.
After the battle of Uruçumirim, many indigenous warriors were captured, and many others fled to the region of Cabo Frio. The event ended up becoming a landmark of the Portuguese occupation of Rio de Janeiro, especially because of the memory of Estácio de Sá, who died weeks after the event, having been struck by a poisoned arrow in the battle.
A morte de Estácio de Sá. Óleo sobre tela. Antônio Parreiras, 1911. Acervo Palácio da Guanabara. Wikimedia Commons.