Hi my name is Saul Garcia Alcaraz, and I have grandparents from Sinaloa. So recently I started working on our family tree, and here's what I found out. My grandfathers name is Filemon Alcaraz Valdez, he was born in 1892 in Las Higueras, Sinaloa. He had 2 brothers (Tomas and Emilio) and one sister (Carmen). His fathers name was Benigno Alcaraz. I hope this helps.