Aegidius Ursinus de Vivere or Aegidius Ursinus de Vivariis (died 17 April 1647) was a Roman Catholic prelate who served as Titular Patriarch of Jerusalem (1641–1647).
On 15 April 1641, he was appointed during the papacy of Pope Urban VIII as Titular Patriarch of Jerusalem.
[1][2] On 23 April 1641, and ordained a priest and on 28 Apr 1641, he was consecrated bishop by Antonio Marcello Barberini, Cardinal-Priest of San Pietro in Vincoli, with Faustus Poli, Titular Archbishop of Amasea, and Celso Zani, Bishop Emeritus of Città della Pieve, serving as co-consecrators.
[2] He served as Titular Patriarch of Jerusalem until his death on 17 April 1647.
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