Have you ever wondered what your surname means? I always do and I have three possible explanations as of now. "Sales" is the plural form of the Spanish word sal "salt." It may also be an abbreviation of other more famous surname of "Rosales." Or, finally, it comes from the name of St. Francis of Sales.
I purposely took this pic when I was in Fatima, Portugal for it was the first time I saw an image of the saint. Not only is he a possible source of our surname; my brother's full name is also Francis Sales!