I know this is closed, and I agree you chose lower case correctly. I just wanted to add that you should not enter "dit" or "dite" in any of the name data fields, as the word itself is not part of the name (which would go in 'nickname' or 'other last name' fields, unless it evolved into a 'current last name,' as they sometimes did. But you would use dit or dite in the biography, as it is a descriptor.