translation question

In reading the marriage certificate of Basilio Baldes y Manuela Gomes I see that it reads " Bacilio Baldes espanol originario y vecino de Santa Maria, hijo lejitimo de Luis Baldes y de Anna Lopes y a Manuela Gomes Casta??? origenaria y vecina de esta villa, hija de "padres no conocidos".

First what is Casta? her name? a label/class? and also does "padres no conocidos" mean that her parents had expired, she was an orphan? or they just were not present?

https://familysearch.org/pal:/MM9.3.1/TH-1-18571-2506-14?cc=1874591&wc=12236790

Thanks for any help in advance.

Best regards,
Monica Ochoa