Wikipedia
The Lançados (literally the thrown out ones) were settlers and adventurers of Portuguese origin in Senegambia, the Cape Verde Islands, Guinea and other areas on the coast of West Africa. Many were Jews, often New Christians, escaping persecution from the Portuguese Inquisition. Lançados often took African wives from local ruling families, enabling protection and advantageous trading ties. They established clandestine trading networks in weaponry, spices, and sometimes slaves, garnering anger from the Portuguese Crown due to its inability to collect taxes.
Although never large in numbers, mixed-race children born to the Lançados and their African wives and concubines served as crucial intermediaries between Europeans and native Africans. These hybrid wielded significant power in the early development of port economies such as Bissau and Cacheu.
They were the progenitors of the Crioulo language and culture.