Amador Vaz de Alpoim (1568–1617) was a Portuguese nobleman, who served as Officer of the Royal Armies,[1] conquistador, colonizer and explorer of South America in the service of the Spanish Crown.

[5] Installed in Buenos Aires, the Alpoim family received parcels of land in the city and in the province, and obtained permission from the authorities to export products.

[6] He and all members of his family swore loyalty to the Monarch Philip III, King of Spain and Portugal, being enrolled in the Royal armies from the moment they arrived at the Río de la Plata.

[14] He was the owner of a large number of haciendas in the province of Buenos Aires, including farms in the current locations of Avellaneda, Quilmes, Lomas de Zamora[15] and Monte Grande.

[19] Some of their ancestors were connected through maternal lineages with several European royal houses such as Álvaro Pires Pinheiro Lobo,[20] and Martim Gonçalves de Lacerda.