The Empire Stabilizes: The Tetrachy
(system with 2 Augusti
and 2 Caesari designed by Diocletian)
Maximianus
I Herculis (286-310
AD) Augustus
Domitius
Domitianus (296-297
AD), Usurpator
Galerius
Caesar and later
Augustus (305-311 AD)
Constantius
I, Caesar, and
later Augustus (305-306 AD)
Maximinus
II Daja (309-313
AD)
Romulus,
son of Maxentius
(died 309 AD)
Alexander
of Carthage (311
AD)
Licinius II ( 317-324 AD)