The slave ship Marquês de Aguiar arrived with enslaved Africans in Brazil. About 427 people had been taken aboard and approximately 294 arrived.

Vessel: Marquês de Aguiar; flag: Portugal / Brazil; rig: Galera. People recorded in connection with the voyage: Investor: Salazar, Francisco José Fernandes; Captain: Azevedo, José de Souza; Captain: Pereira, Nicolau de Jesus. The voyage began at Rio de Janeiro on 13 January 1815. Principal recorded place where captives were acquired: Benguela (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 51 days. Estimated mortality during the crossing: 31.0%. Recorded outcome: Voyage completed as intended.