where is san gregorio is chihuahua?

https://familysearch.org/ark:/61903/3:1:9392-FS98-W8?i=160&wc=3J41-JWL%3A171936201%2C171936202%2C172754701%3Fcc%3D1874591&cc=1874591

i'm trying to figure out where francisca dosal was born in order to find a baptism record for her. if i'm reading the marriage record(the link above) correctly, she's from some place called san gregorio in the state of chihuahua, but i can't seem to find a place called san gregorio in familysearch's chihuahua category.
francisca dosal would be my great uncle manue's great grandma on his dad's side.