Fidalgo

Fidalgo (, ), from Galician and Portuguese filho de algo—sometimes translated into English as "son of somebody" or "son of some (important family)"—is a traditional title used in Portugal (and later in Brazil) to refer to a member of the titled or untitled nobility. A fidalgo is comparable in some ways to the French gentilhomme (the word also implies nobility by birth or by charge) and to the Italian nobile. The title was abolished after the overthrow of the Monarchy in 1910. It is also a family surname.

Read more about Fidalgo:  Origins and Etymology