Antipope Constantine II was an antipope from 767 to 768, during the reign of Pope Stephen IV. He was killed by the Lombards, when prisoner in the monastery of San Saba. Antipope Felix V, the last historical Antipope. ... For the aircraft, see Boeing 767. ... Events Charles (Charlemagne) and Carloman divide the Frankish kingdom after the death of their father Pippin the Short. ... Stephen IV, (720 – January 24, 772), pope August 1, 768 – January 24, 772, was a native of Sicily. ... The Lombards (Latin Langobardi, from which the alternative name Longobards found in older English texts), were a Germanic people originally from Northern Europe that entered the late Roman Empire. ... San Saba seen from outside the external wall. ...