Three items need to be addressed concerning Fray Francisco Muñoz.
1. He broke his vows of chastity and fathered at least three children.
2. Juana (Ana) Lopez de Aragón is the mother of Jacinto, Pedro, and Francesca.
3. Doña is not a title of nobility, but one of respect.
See weatherhill's website or go to Hispanic Genealogical Research Center website and proceed to the Great New Mexico Pedigree Database.
Also, if you are really into the research and proper citation of work, the Inquisition of México Archives.