Severinus waited 18 months for consecration by Heraclius, this emperor in Constantinople, then died in 3 mo.
[DOC] [TLE] Konstantinos III, Eastern Roman Emperor - Geni [PAR] May 31, 2016 ... Genealogy for Heraclius Novus Constantinus (612 - 641) family tree on Geni, 
with ... Death: Died May 24, 641 in Eastern Roman Empire ... Constantine 
Emperor of Byzantium III in FamilySearch Family Tree ... view all 18 ... Heraclius 
and his first wife Eudocia, and ruled as Emperor for four months in 641.