Ms. Escobedo are you trying to locate your father? or are you looking for information for your family tree? Does your mother know the last whereabouts of your father? or if she remembers name(s) of your father's siblings, you may start there by asking them for information on your father. If you think he may still be in Guadalajara you can file a missing persons report with the Mexican consulate in that town, there may be a fee or fees, I'm not sure. You may also try calling information in Guadalajara and getting as many names with the last name of Neri, as it is not a usual Mexican name you shouldn't have problems locating some of his relatives. What is your father's full name and date of birth, I will help you look as much as I can. Good Luck.