(NS)FAQ #2: Why "Loreto"?

One question I have received several times, especially among hispanohablantes ("Spanish-speakers", for you English-speakers) is why my wife's name was "Loreto" rather than "Loreta" since "o"-ending first names tend to indicate males and "a"-ending names tend to indicate females.  When someone first posed this question to me, I thought it might have to do with her being the eldest child in her family and there are quite a few guys who want their first child to be male.  However, that overlooked a more obvious answer, one that came to me the night before her final viewing as I sat my sister-in-law's living room in Vista, CA and saw a poster for this city:

(That would be Loreto, Baja California Sur, Mexico)