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Pierre d'Ailly

Type Figure Region France Time 1350–1420 Also known as Pierre d'Ailly、Cardinalis Cameracensis、皮埃尔·达伊、Pierre de Dailly

French theologian and church leader of the late 14th to early 15th century, educated at the University of Paris, bishop of Le Puy and Cambrai, made c…

Timeline

  1. 1380–1395Paris · FranceD'Ailly completed his theological education and taught at the University of Paris, earning a doctorate in theology in 1384. By the 1390s he was a leading Paris theologian concerned with the schism, developing conciliar theory that laid theological groundwork for later church reform thought.
  2. 1395–1414Cambrai · FranceIn 1395 D'Ailly became bishop of Le Puy, in 1397 bishop of Cambrai, and in 1411 was raised to cardinal by Pope John XXIII. During this period he actively took part in the diplomatic and theological planning to end the Western Schism, while continuing to write on astronomy and canon law.
  3. 1414–1420Avignon · FranceD'Ailly attended the Council of Constance and promoted the election of Martin V to end the Western Schism. Despite his advanced age he took part in the council's key decisions; he died at Avignon in August 1420, leaving a large body of theological, astronomical, and canonistic writings.

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