guerreiromartins on Family Tree Circles

My grand father was born in Vila Real, Portugal, on year of 1898.
When he was about 16 years old, he went to Brazil.
First he arrived at Recife, Pernambuco State, Brazil.
After, he moved to S?o Paulo, S?o Paulo State, Brazil.
My father told me my grand father has changed his name when arrive in Brazil.
We suppose his name was Jo?o Matias Junior. He changed to Jo?o Martins Junior.
He had some relatives living in Mogi das Cruzes, S?o Paulo State, Brazil.

Someone can help me to find my ancient family ?

Thanks,

Celso Martins