::This is an interesting proposal, which could be fruitful, although a long note. I think that the fact that the Church uses Catholic Church in all its principal documents and pronouncements needs to be set out. Point 9 needs care. Roman Catholic tends to be used in local names as a hangover from when it was enforced. As far as treaties go, the 1912 source may have said this (I don't know how accurately), but modern treaties certainly use the name: "Catholic Church", see Italy 1984, Spain 1979, Croatia 1996