Gregory IV
His short reign has to be considered in the context of the clash between the pro-Calvinist Patriarch Cyril Lucaris, supported by the Dutch and English ambassadors, and his opponents supported by the French, Austrian and Venetian ambassadors to the Ottoman capital. The latter were successful at persuading the Grand Vizier to depose Cyril Lucaris on 12 April 1623 and to appoint in his place the blind and old Gregory IV. The Metropolitans and the bishops were unsatisfied with Gregory IV because he had not been canonically elected by the Holy Synod. Thus on 18 June 1623 the Holy Synod deposed Gregory IV and formally elected Anthimus II as Patriarch of Constantinople.