Hi, I just got off the phone with Jesse Mortensen amd he will be glad to hear from you and help with your search. As I mentioned, he has direct access to the genealogical records kept by the LDS church.
It would be nice to know where you live and if that is where the Aldaz part of your family settled.
I also have a contact in Colorado Springs who is an Aldaz but we haven't found a strong family connection, yet.
Good luck and don't hesitate to call or email me if I can be of further help.