The target of this meeting had questioned whether a certain figure was "two or three months old," and this summit's activities included separating the Church of Cyprus from the bishop of Antioch. Held at the same site where Pope Victor I and Polycrates disagreed on the date of Easter in 190, and where Dioscurus attempted to legitimize Eutychianist Monophysitism at the later "Robber Synod," it was convened at the orders of Pope Celestine I. This meeting was targeted by a rival group led by John of Antioch, which excommunicated Cyril and Memnon in an attempt to defend a doctrine, also targeted at the later Council of Chalcedon, which held that the human and divine Christ were two separate persons. For 10 points, name 
The target of this meeting had questioned whether a certain figure was "two or three months old," and this summit's activities included separating the Church of Cyprus from the bishop of Antioch. Held at the same site where Pope Victor I and Polycrates disagreed on the date of Easter in 190, and where Dioscurus attempted to legitimize Eutychianist Monophysitism at the later "Robber Synod," it was convened at the orders of Pope Celestine I. This meeting was targeted by a rival group led by John of Antioch, which excommunicated Cyril and Memnon in an attempt to defend a doctrine, also targeted at the later Council of Chalcedon, which held that the human and divine Christ were two separate persons. For 10 points, name this 431 gathering which condemned Nestorianism.
The target of this meeting had questioned whether a certain figure was "two or three months old," and this summit's activities included separating the Church of Cyprus from the bishop of Antioch.
Second Council of Ephesus