I need help finding info about my dad's dad but have no leads.They were from Rio

Question:

I need help finding info about my dad's dad but have no leads.They were from Rio Grande City. Last Name Silvas

My grandfather's name was Flavio Silvas (1925-1980) and his parents were Santos Silvas and Barbarita Salazar(1900?-1930?). I was told that his mother died before he was 6 and we're not sure about where his father went except that my gpa was alone by the age of 6 or 7. Once my grandfather passed, any other info left with him. For some reason he never wanted to speak of it. We have no info about any siblings or extended family. When I've done searches on ancestry.com I can find a few things, but nothing that will lead anywhere. There's a dead end once I find his parents. Does anyone know how I can find his family? They are also tied to Nueces county in Corpus Christi, TX and Starr County in TX. Any info would be a great help.

Additional Details

4 months ago
From the stories i've been told, my gpa was homeless and would work at a near by store of somekind for bologna sandwiches or whatever food they could spare. Sad story, but i'm not sure how true it is considering he never spoke much about it.

4 months ago
I think my grandpa flavio was born in TX because his parents may have been born in Mexico and needed an excuse to stay. But again its all speculation.

Best Answer - Chosen by Asker: 4 months ago
From the stories i've been told, my gpa was homeless and would work at a near by store of somekind for bologna sandwiches or whatever food they could spare. Sad story, but i'm not sure how true it is considering he never spoke much about it.