Hello John, I stumbled across this site and was surprised to see other Alderete's out there, especially as close as San Antonio... I live in San Marcos. It is definitely a unique last name. My grandfather lives in San Antonio, his name is Antonio Alderete. My father who has the same name lives in Houston. I know my grandfather got remarried and had two more children but I'm not even sure of their names. I haven't seen my grandfather in years. I've always wondered where our name comes from, and how many more Alderete's are out there. I'm curious if you've found any more information on your search, and if we're possibly even related. Good luck in all you do.