What Catholic calls himself a "Roman Catholic"?
The Episcopalians call them "Romans" in order to distinguish them from the "Anglo-Catholics", and other protestants call them "Roman Catholics" to distinguish them from "catholic" small-c meaning "universal".
I suspect this is one or two people who have given themselves a fancy name, sort of like that "Catholics for a Free Choice" group.
Plenty of us do and my dog tags, which I still carry with me everyday, state my religious preference as ROMAN CATHOLIC. While it can be used as a pejorative by Catholic bashers, there is no shame in calling oneself a Roman Catholic.