No.	Name:	Accession	End of Reign	Years in Power	Cause of death/end of reign	Violent/Non-Violent
1	Augustus	-27	14	41	Natural Causes	n
2	Tiberius	14	37	23	Natural/Assassination	n
3	Caligula	37	41	4	Assassination	v
4	Claudius	41	54	13	Assassination	v
5	Nero	54	68	14	Suicide	v
6	Galba	68	69	1	Suicide	v
7	Otho	69	69	0	Suicide	v
8	Vitellius	69	69	0	Murdered	v
9	Vespasian	69	79	10	Natural Causes	n
10	Titus	79	81	2	Natural Causes	n
11	Domitian	81	96	15	Assassination	v
12	Nerva	96	98	2	Natural Causes	n
13	Trajan	98	117	19	Natural Causes	n
14	Hadrian	117	138	21	Natural Causes	n
15	Antoninus Pius	138	161	23	Natural Causes	n
16	Marcus Aurelius	161	180	19	Natural Causes	n
17	Lucius Verus (co-emperor with M.A.)	161	169	8	Natural Causes	n
18	Commodus	180	192	12	Assassination	v
19	Pertinax	193	193	0	Assassination	v
20	Didius Julianus	193	193	0	Assassination	v
21	Septimus Severus	193	211	18	Natural Causes	n
23	Geta	211	212	1	Murdered	v
22	Caracalla	211	217	6	Assassination	v
24	Macrinus	217	218	1	Executed	v
25	Elegabalus	218	222	4	Murdered	v
26	Severus Alexander	222	235	13	Killed in Riot	v
27	Maximinus	235	238	3	Murdered	v
28	Gordian I	238	238	0	Suicide	v
29	Gordian II	238	238	0	Died in Battle	v
30	Balbinus	238	238	0	Murdered	v
31	Pupienus	238	238	0	Murdered	v
32	Gordian III	238	244	6	Died in battle (or assassinated)	v
33	Phillip	244	249	5	Murdered	v
34	Decius	249	251	2	Died in Battle	v
35	Trebonianus	251	253	2	Died in Battle	v
36	Aemilianus	253	253	0	Murdered	v
37	Valerianus	253	260	7	Captured	n
38	Gallienus	253	268	15	Murdered	v
39	Claudius Gothicus	268	270	2	Plague	n
40	Aurelian	270	275	5	Murdered	v
41	Tacitus	275	276	1	Murdered or natural causes	n
42	Florianus	276	276	0	Murdered	v
43	Probus	276	282	6	Murdered	v
44	Carus	282	283	1	Murdered (officially lightning)	v
45	Carinus	283	285	2	Died in Battle	v
46	Numerianus	283	284	1	Murdered	v
47	Diocletian	284	305	21	Retired	n
48	Maximian	286	305	19	Retired, later executed after attempting a coup	v
49	Constantius	292	306	14	Natural Causes	n
50	Galerius	293	311	18	Illness	n
51	Licinius	311	323	12	Executed	v
52	Constantine	306	337	31	Natural Causes	n
53	Constantine II	337	340	3	Died in Battle	v
54	Constantius II	337	361	24	Natural Causes	n
55	Constans	337	350	13	Murdered	v
56	Julian	361	363	2	Died in Battle	v
57	Jovian	363	364	1	Natural Causes	n
58	Valentinian I	364	375	11	stroke	n
59	Valens	364	378	14	Died in Battle	v
60	Gratian	367	383	16	Murdered	v
61	Valentinian II	375	392	17	suicide or killed	v
62	Theodosius I	378	395	17	Illness	n
63	Honorius	393	423	30	Illness (dropsy)	n
64	Valentinian III	425	455	30	Murdered	v
65	Petronius Maximus	455	455	0	Murdered	v
66	Avitus	455	456	1	deposed, later killed	v
67	Majoran	457	461	4	Murdered	v
68	Libius Severus	461	467	6	Natural Causes	n
69	Anthemius	467	472	5	Murdered	v
70	Olybrius	472	472	0	Illness (dropsy)	n
71	Glycerius	473	474	1	Deposed	n
72	Julius Nepos	474	475	1	Deposed	n
73	Romulus Augustulus	475	476	1	Deposed	n
	Average	8.76	Total Years reigned	640	Violent (approx.)	45
	Median	5			Non-violent (approx.)	28