does anyone know who magdalena fernandez's mother was?

one day while i was browsing through marriage dispensations, i found one for her son juan jose hernandez. it's in the link below

https://familysearch.org/pal:/MM9.3.1/TH-1961-29706-8336-19?cc=1937239&wc=MMBP-YQH:n1867596228

when i saw the written dispensation on pages 600-602, it states that celedonio fernandez is her father. i suspect that her dad is my 6th great-grandfather. in order to prove that, i would need to know who her mother is. if no one here knows her name, does anyone at least have an idea when and where did she get marraied with manuel hernandez