skos:altLabel | - Gregory XIII
- Gregory XIII Boncompagni
- Gregory XIII.
- Grégoire XIII
- Pontificate of Gregory XIII
- Pope
- Pope Gregorius XIII
- Pope Gregory
- Pope Gregory XIII (born Ugo Boncompagni)
- Pope Gregory XVIII
- Pope Gregory xiii
- Pope Gregory XIII
- Ugo Boncompagni
- Ugo Buoncompagni
- XIII
- pope Gregory XIII
- the Pope’s
- the pope
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