Another Herrera question....

Does anyone have the birth, marriage, parental info on Pedro Pablo de Herrera and Maria de la Roza Robles? I've traced two of my lines back to the same couple and have hit a dead end.

One line is Manuel Ygnacio de Herrera, b: abt 1732 Tlaltenango and the other line is his brother Marcelino, b: abt 1740 Tlaltenango.

I did a search here and did see some previous communication on this couple, but no further info was provided.

I would also like to hear from all of you that share this line as I am compiling a list of cousins I've discovered here.

Saludos,
Roy