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[Salisford]

Antipope Ioannes III (born Ioannes; fl. 567–571), also rendered as Antipope Juan III, was a northern antipope of the Great Schism who served from 567 until his deposition in 571. He was supported by the Northern Romanyan Empire and succeeded Antipope Sixto IV. Ioannes opposed both Pope Juan III and Southern Antipope Félix IV throuhgout his antipapacy. He was deposed on 17 October 571 after the Battle of the Three Popes and his ultimate fate is unknown