Luís de Alpoim (13th century) was a medieval Knight, ambassador to England, France and the Holy Roman Empire.

[1] Luís was born in Portugal, son of Gomes de Alpoim, a knight of Afonso III of Portugal and Ximena Pereira, daughter of Gonçalo Pereira, Lord of Castro Verde.

[3] Alpoim was descendant of Martim de Freitas, Alcaide of Coimbra.

[4] His descendants included João de Alpoim, ambassador to Castile,[5] Amador Vaz de Alpoim, colonizer of Buenos Aires in the 17th century.

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