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First Council of Lyon

Type Event Region France Time 1245

From June 24 to July 15, 1245, Pope Innocent IV convened the Thirteenth Ecumenical Council in Lyon, France, amid his long conflict with Frederick II;…

Timeline

  1. 1245Lyon · LyonInnocent IV opened the council at Lyon Cathedral with about 150 bishops attending; he chose Lyon both to distance himself from Frederick II's Italian power and to remain under French royal protection, laying procedural groundwork for the subsequent ecclesiastical trial of the emperor.
  2. 1245Lyon · LyonThe council issued decrees such as Ad Apostolicae Dignitatis Apicem, deposing Frederick II on charges of heresy and perjury and calling on the faithful to launch a crusade against the emperor; it also discussed threat reports brought by Mongol envoys and church fiscal reform, closing on July 15.

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