looking for correct parents

my 3rd great grandma is leonarda aldana who married martin aguinaga and had my 2nd great grandma known as silveria aguinaga. who is the correct [arents for them? in records i found a name known as casildo aldana in jalisco, mexico records and others are regarded in marriage records as jose placido aldana and a antonia lopes or hernandes for a last name? i think at this time im leaning towards placido aldana as a correct name as sometimes in the recordsthey can be misspelled or something of the sort. also seen that there were some records referring to el salvador so i would like to know where they came from as well . thanks and merry christmas.