I have been searching my Cordero history for along time now. Have information back to 5th g-grandfather with alot of holes in between. I have found no reason as yet to why the family history has been kept a secret. Although i have found the cordero line is not the only one to have kept their line quite. My Cordero line is from Mexico,Santa Barbara,San Luis abispo area. A hint i searched the Dominguez side to find information i have and their are a few great people online that have helped.