This story sounds strangely similar to my husband's grandfather Gabriel Raya RAMON and when he was a teenager, his FATHER remarried and the new step mom did not like him. He ran away to the US and landed in South Dakota.
Interestingly enough, when he came to the US, he crossed the border as Ramon Raya and remained that name for many years- even married Aurora Fajardo and had a couple kids using that name.
I hope you still have this email address, as it would be very interesting to compare notes!
Cindy Wanko Ceballos