I was searching for Alderete family members from Mesilla and was able to find your family. Since your greatgrandfather was from Mesilla; is it possible he had an uncle whom is your greatgrandfather. My grandmother was married to Lorenzo Alderete from Mesilla and had a son by the name of Juan, who also had other siblings. Albino, Josephina, Locaria, Frank, Felicitas. Do these names sound familiar.