Melchora de Ornelas and Nicolas Lopez

Hello Nuestros Ranchos Forum

I was hoping someone might be able to help me find the possible parents of
Melchora de Ornelas and Nicolas Lopez who had a natural born child around
1717, probably in Aguascalientes. Melchora de Ornelas would've been born
probably between 1690 - 1700 and Nicolas Lopez would've probably been born
around the same time in a place called el Puesto del Potrero de los Lopez.
The only information I have comes from their daughter's informacion
matrimonial in 1740 where it says she's 23 years old and describes her as:

Maria Theresa Lopez, española, originaria del Puesto del Potrero de los
Lopez, jurisdicción de la villa de Aguascalientes y vecina de esta
feligresía en el Puesto del Mesquite de cinco años a este parte, hija
natural de Nicolas Lopez, ya difunto, y de Melchora de Ornelas...

That's the only information I know. If anyone knows of a Melchora de
Ornelas in the same time frame of 1700 or earlier or a Nicolas Lopez also
born around the same time please let me know. Also, if someone knows of a
Lopez family from el Puesto del Potrero de los Lopez please let me know.

Danny C. Alonso