(Achille Ratti ) 1857–1939, Italian ecclesiastic: pope 1922–39. |
| Pius XI Originally Ambrogio Damiano Achille Ratti. 1857-1939. Pope (1922-1939) who signed a treaty with Benito Mussolini granting papal sovereignty over Vatican City. |
Pius XI
Italian pope from 1922 to 1939, one of the most important modern pontiffs whose motto "the peace of Christ in the Kingdom of Christ" illustrated his work to construct a new Christendom based on world peace.
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