Helladius assisted at a minor Council of Constantinople in 536.
This dates back to the Council of Constantinople in 533.
The council of 867 was followed by the Council of Constantinople in 869.
The Fourth Council of Constantinople was called in 879.
Only one bishop is known, Nicholas, present in 518 at a Council of Constantinople.
In 553, the Council of Constantinople, proclaimed that she was perpetually a virgin.
He made this official through the Council of Constantinople in 815.
In different forms they were pursued at the second and third Councils of Constantinople (553 and 680-1).
The Council of Constantinople in 360 supported a compromise that allowed for both views.
Some also regarded the fourth Council of Constantinople, meeting in 879-880, in the same way.