Hello - looking for assistance from the Yanez Family line of Nochistlan, Zacatecas.

Joseph Yañez-Pérez was my 6th great-grandfather (circa 1686–1751) married to:
Antonia Anciso (circa 1690-?)

Joseph was the son of Juan Yanez del Monte (1640s-1673) married to:
Thomasa Úrsula Pérez de Frías (circa 1650-?)

Thomasa's father was Matheo Perez De Frias (circa 1626–1693) married to:
Thomasa de la Cruz (circa 1629– ?)

I am trying to determine the true parents of Matheo Perez de Frias. In a couple of ancestry sites, I have seen the parents noted as:

Luis Delgadillo Perez de Frias (circa 1598–1649) married to:
Melchora de Los Reyes Rodriguez de Carvajal (circa 1604–1656)

However, I do not have proof of this. Does anyone in this forum have documentation to prove this? Or do you know who his parents might be if not Luis and Melchora?

Thank you!
Dolores Yanez Noonan