About Abrão Espinhosa
Spinoza's ancestors were of Sephardic Jewish descent, and were a part of the community of Portuguese Jews that grew in the city of Amsterdam after the Alhambra Decree in Spain (1492) and the Portuguese Inquisition (1536) had led to forced conversions and expulsions from the Iberian peninsula.
Some historians argue the Spinoza family ("Espinosa" in Portuguese) had its origins in Espinosa de los Monteros, near Burgos, Spain. Others claim they were Portuguese Jews who had moved to Spain and then expelled back to their home country in 1492, only to be forcibly converted to Catholicism in 1498. Spinoza's father was born roughly a century after this forced conversion in the small Portuguese city of Vidigueira, near Beja in Alentejo. When Spinoza's father was still a child, Spinoza's grandfather, Isaac de Spinoza (who was from Lisbon), took his family to Nantes in France. They were expelled in 1615 and moved to Rotterdam, where Isaac died in 1627. Spinoza's father, Miguel, and his uncle, Manuel, then moved to Amsterdam where they reassumed their Judaism. Manuel changed his name to Abraão de Spinoza, though his "commercial" name was still the same.