• Thumbnail for Pope Gregory XIII
    Pope Gregory XIII (Latin: Gregorius XIII; Italian: Gregorio XIII; 7 January 1502 – 10 April 1585), born Ugo Boncompagni, was head of the Catholic Church...
    20 KB (2,302 words) - 02:14, 14 July 2024
  • Thumbnail for Inter gravissimas
    Inter gravissimas (category Documents of Pope Gregory XIII)
    defending the Gregorian calendar, Christoph Clavius, Romani calendarii a Gregorio XIII. P. M. restituti explicatio (1603), which is tome V in his collected...
    10 KB (1,351 words) - 20:16, 10 July 2024
  • Thumbnail for Prophecy of the Popes
    Comensoli Antonini, Lorenzo (2015). "Profezia e alchimia alla corte di Gregorio XIII e Sisto V: un carteggio dall'Accademia Carrara di Bergamo". Aevum. 89...
    88 KB (3,200 words) - 03:08, 23 April 2024
  • Thumbnail for Scala Sancta
    de ̕pittori, scultori, architetti, ed intagliatori, dal pontificato Gregorio XIII del 1572 fino a’ tempi di Papa Urbano VIII nel 1642. Archived 18 January...
    17 KB (1,973 words) - 18:54, 14 July 2024
  • Thumbnail for Christopher Clavius
    calendarii a Gregorio XIII P.M. restituti explicatio. Rome, 1603 (An explanation of the Gregorian calendar) Romani calendarii a Gregorio XIII P.M. restituti...
    16 KB (1,905 words) - 19:31, 29 February 2024
  • October 1582 following the papal bull Inter gravissimas issued by Pope Gregory XIII, which introduced it as a modification of, and replacement for, the Julian...
    72 KB (8,286 words) - 23:17, 13 July 2024
  • Thumbnail for Date of Easter
    Retrieved 9 June 2021. Clavius, Christopher (1603). Romani calendarij à Gregorio XIII. P. M. restituti explicatio. Archived from the original on 9 April 2023...
    141 KB (13,115 words) - 13:48, 27 May 2024
  • Thumbnail for Pope Gregory XII
    Pope Gregory XII (Latin: Gregorius XII; Italian: Gregorio XII; c. 1327 – 18 October 1417), born Angelo Corraro, Corario, or Correr, was head of the Catholic...
    12 KB (1,223 words) - 04:21, 29 February 2024
  • Thumbnail for Alfonso XII
    XII (Alfonso Francisco de Asís Fernando Pío Juan María de la Concepción Gregorio Pelayo de Borbón y Borbón; 28 November 1857 – 25 November 1885), also known...
    27 KB (2,534 words) - 11:32, 28 July 2024
  • de ̕pittori, scultori, architetti, ed intagliatori, dal pontificato Gregorio XIII del 1572 fino a’ tempi di Papa Urbano VIII nel 1642. (1733), by Giovanni...
    3 KB (366 words) - 09:51, 8 April 2024