Victor--
After looking at your files, I see that your ancestor Pedro Jose Suares del Real and his wife Maria Martina Sanches Castellanos are as far back as you have gone. Well, I am fairly certain that Pedro belongs to my Suares del Real family. Here's some of what I have found about that family, as far back as the immigrant ancestor from Spain:
Descendants of Juan Martin /Suares del Real/
1 [2] Juan Martin /Suares del Real/ b: in Reinos de Castilla
.. +Lorensa Madera
.... 2 Antonio /del Real/
........+Juana Rufina Rodriguez aka: Rufina b: 1723 Baptism: 28 Apr 1723
Tlaltenango de Sanchez Roman, Zacatecas, Mexico m: 15 May 1740
in San Luis, Colotlan, Jalisco, Mexico
.......... 3 Maria Guadalupe /del Real/ b: 1742 Baptism: 05 Aug
1742 San Luis, Colotlan, Jalisco, Mexico
.......... 3 Juana /del Real/ b: 1746 Baptism: 13 Jun 1746 San
Luis, Colotlan, Jalisco, Mexico
.......... 3 Pedro Joseph /del Real/ b: 1748 Baptism: 14