Vicente Sambrano and Martina ?

Hello All:
My name is Robert O.Blea from Albuquerque,New Mexico.
My paternal grandmother,Isabel Blea,was daughter of Rosendo Blea and Amalia Sambrano.
Amalia Sambrano was daughter of Vicente Sambrano and Martina
?
Martina ? de Sambrano was widowed of Vicente Sambrano and subsequently remarried to Isaac Barela in Tome'-Valencia County,New Mexico.
I would like to be able to find out what Martina's maiden name was and also to find further on Vicente Sambrano.
Thank You all very much for your time and attention.
Robert O. [email protected]