336Persia conquers Romanclient state of Armenia
336Constantius II repelsPersian invasion ofRoman Mesopotamia
337Constantine makesHannibalianus king of kings
22 May 337Constantine diesnear Nicomedia
May–Sep 337Dalmatius, Hannibalianus,and others killed in mass purge
337Persians unsuccessfullybesiege Nisibis
337Constantius II campaignsagainst Sarmatians
9 Sep 337Constantine II, Constantius II,and Constans become Augusti
9 Sep 337–? Apr 340Constantine IIpresides overRoman Empire
9 Sep 337–3 Nov 361Constantius II rules East,then all Roman Empire
9 Sep 337–? Jan 350Constansrules parts ofRoman Empire