I have been trying my best to help someone trace their ancestral lines in mexico further. Their grandpa's dad side of the family came from jocotepec. as you can see i've been having some difficulty regarding that since many of their ancestors didn't have a consistent last name until the mid/late 1800's.

But i know that two of her ancestors lucas martin and lucia dolores had children in the 1770's and 1780's mainly, but there's one kid born in 1768 which i'm not sure if the child is theirs or belonging to a couple with similar names.
https://familysearch.org/search/record/results?count=20&query=%2Bfather…

the 1768 record in that link above lists a kid for a martin angel and juana lucia. are these people. i also found a marriage record with the names martin angel and juana lucia. but here's the kicker, her ancestors lucas martin and lucia dolores had a son named rafael angel, which is why i'm considering the possibility of martin angel and lucas martin of being the same person, and perhaps juana lucia and lucia dolores being the same person as well.
https://familysearch.org/ark:/61903/3:1:9392-VVSX-2T?mode=g&i=199&wc=3J…

is there any way i could determine if the marriage record in the link right above, indeed are that said person's ancestors?