Silva, da Silva, and de Silva are surnames of Portuguese or Galician origin which are widespread in the Portuguese-speaking countries including Brazil. The name is derived from Latin silva ("forest" or "woodland"). It is the family name of the House of Silva. The name is widespread in Galician-speaking regions of Spain (mostly in Galicia) and even more so in regions of the former Portuguese Empire in the Americas (being the most common surname in Brazil), in Africa and Asia, notably in India and Sri Lanka. It is also quite common in Spanish-speaking Latin America.
https://en.wikipedia.org/wiki/Silva