What year did the Spanish soldier turned priest Ignatius of Loyola founds the Jesuit order as part of the Catholic Counter Reformation?

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The Society of Jesus (Jesuits) was officially founded in 1540 — Pope Paul III approved it by the papal bull Regimini militantis ecclesiae on 27 September 1540. (Ignatius and companions had taken private vows earlier, in 1534, at Montmartre.)