Pereira Pinto & Sottomayor, Portugal/Fontes Ferreira, Brazil

I'm researching my own family in general, from the past to the present days, in its several branches, and the Pereira branch in particular, trying to find the individuals that may link Francisco Pereira Pinto, the Baron of Ivinheima, to his ancient and illustrious ancestor Nuno Álvares Pereira, the champion of Portuguese independence in the XIV century.
I seek also information about Rita de Cássia Ourigues Jacques, the grandmother of my grandmother, Marina Borges Leitão, who was the second wife of Francisco Pereira Pinto, the Baron of Ivinheima, as well as information of the three siblings of my grandfather, Arthur Fontes Ferreira - Francisco, Eduardo and Caetano, sons of Quintino Ferreira in Feira de Santana-BA, Brazil - and their descendents.
Any information would be appreciated. I am also willing to share the information that I have, which accounts with more than 200 names.

MarceloFerreira
Rio de Janeiro,Brazil
[email protected]