I don't know if anyone has contacted you or not, but I am from the Coz family. My grandmother, Concepcion Coz Robles, was the daughter of Miguel Coz. Miguel had a sister named Carmen Coz born Jul 16, 1849, Sonora, Mexico and lived with her family in Yuma, Az. Miguel also had a brother, Jose Coz who was married to a Marie Madril, which is sometime mixed with Madrid. Anyway, Miguel's fathers name is Jesus Coz born about 1876 in Yuma. Hope this helps.