“Oldest four-letter papal name” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.PIUS is the answer to the New York Times crossword clue “Oldest four-letter papal name”. It was last seen in the puzzle of October 25, 2025, where it runs at 47 Down and fills 4 squares. It crosses 4 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.