As mentioned in the overview of this profile Catherine was mentioned in the will of William brother of Rev. John Penfold. I would say it seems that her maiden name and married name may be confused on her profile. I will double check this with Sid Geohagen and see if I can access the will.
Sorry, should have checked facts before spouting off.... This is the mother of Catherine, wife of Rev. John so the names are probably correct. Just because a name/tree is not in Ancestry.com does not in the least mean to say it is wrong or non-existant.