Pero Alvarez

Pero Alvarez was a man who came to England from Portugal, and had been enslaved. Henry VII of England formally declared him free of his slavery, which was not then a recognised state in England. This was a legal proof that was later used as a precedent and was accepted in 1490 by Joao II of Portugal.^[1][2]

References

1. Miranda Kaufmann, Black Tudors, Oneworld Publications, 2017, p. 15.
2. Ungerer, The Mediterranean Apprenticeship of British Slavery, p. 96.