I know these posts are relatively old but I figured I would add my information to the list and hope for some information. My family on the Oaxaca side is from Chihuahua, Chihuahua. I also know that I am related to Anthony Quinn. My Dad's name is Francisco Oaxaca, Grandpa's name is Jaime Oaxaca (El Paso), Great Grandfather's name is Angel Oaxaca (Chihuahua, wife is Lucinda Nevarez) and Great Grandfather's name is Jesus J(Jose I think) Oaxaca (wife is Josefa Jacquez).
I just learned today (Thank you Gerardo for the information via Frank Dominguez!) that the way I may be related to Anthony Quinn is that his Mother, Manuela Oaxaca, was born out of wedlock and her mysterious father that was forced to abandon her was a Oaxaca, the son of a wealthy landowner that her mother worked for. I have not been able to find any information on that Oaxaca family, but I know for a fact that my side of the Oaxaca's were wealthy landowners before the Revolution. During the revolution they got their land taken away and afterwards they were not able to reclaim it. I had a great-uncle who tried to go back to Chihuahua to reclaim the land but he was killed.
If anyone has any information about my ancestors I would greatly appreciate it. Our last name is very hard to track! Thanks!