The Third Council of Constantinople is believed to have been the Sixth Ecumenical Council by the Eastern Orthodox, the Roman Catholics, the Old Catholics, and a number of other Western Christian groups. It was called by Byzantine Emperor Constantine IV, and met from November 7, 680 to September 16 of 681.
The council's conclusion was that Jesus has two wills as well as two natures, divine and human, and that those two wills did not conflict with each other. It thus refuted the heresy of monothelitism, which held that Jesus Christ had only a single, divine will. Also, it posthumously restored Pope Martin I and Maximus the Confessor to communion with the church, and anathematized the late Pope Honorius I, who had embraced monothelitism.
In his memoirs, Justinian II wrote of his childhood memories of the Sixth Ecumenical Council, which he claimed had been called by his father, Constantine IV, to specifically deal with the issue of monophysitism. Justinian was able to attend some of the sessions of Council, which hardened his religious piety, but did nothing to temper his self-righteousness.