I too am looking for my grandfather named Joaquin Valencia. He was born in Mexico City in 1909.He moved to Illinois and a few years after my father was born he left Illinois and I believe he went California about the same time your fam went there. Is there anything that you know that may help me? My grandfather also had I believe 6 or 7 brothers. His middle name was Baz or Boz or something around that name. If you believe you know something I can give you more info.