The tables below are reproductions of the charts found in chapter V of The New Empire of Diocletian and Constantine (Cambridge: Harvard University Press, 1982) by T.D. Barnes. Minor stylistic changes have been made to improve consistency.

The tables below are adapted and reproduced with permission from T.D. Barnes, The New Empire of Diocletian and Constantine (Cambridge: Harvard University Press, 1982).

Click here to access a downloadable pdf of this document.

Principal Residences

YearLocation
285–286On campaign
286–293?Trier
293?–296Milan and Aquileia
296–299On campaign and at Carthage
299–305Milan and Aquileia

Attested Movements

DateEventSource
285, July 21Proclaimed Caesar, probably in MilanEutropius, Brev. 9.20.3 (Caesar); RIC 5.2.241 no. 203 (Ticinum: ADVENTUS AUG); Passio Marcelli 2 (day)
285, late summerCampaign against the BagaudaePan. Lat. 10(2).4.2 ff.
285, c. Sept.At Boulogne?Eutropius, Brev. 9.21 (which strictly attests only Carausius’ presence at Bononia)
285, autumnRepels a German invasion of GaulPan. Lat. 10(2).5.1 ff.
286, Feb. 10At MilanCJ 8.53(54).6 + 3.29.4 = Frag. Vat. 282
286, June 21At MainzFrag. Vat. 271
287, Jan. 1At Trier (or possibly Cologne or Mainz)Pan. Lat. 10(2).6.2 ff.
287Expedition across the RhinePan. Lat. 10(2).7.1 ff.
288Conference with DiocletianPan. Lat. 10(2).9.1
288, lateReceives Gennoboudes and his Franci, presumably in northwestern GaulPan. Lat. 10(2).10.3 f.
289, April 21At Trier (or possibly Cologne or Mainz)Pan. Lat. 10(2)
289? or 290?Visits Rome?Julian, Orat. 1, 5d
290, earlyVisits LugdunumRIC 5.2.222 no. 13, 261 no. 347 (ADVENTUS AUGG)
290Tours GaulPan. Lat. 11(3).4.2
290, c. Dec. 22Crosses the AlpsPan. Lat. 11(3).2.4
290, late Dec., or 291, Jan.Confers with Diocletian in MilanPan. Lat. 11(3).8.1 ff.
291, Feb. 18At Durocortorum (Reims)Frag. Vat. 315
291, summerAt TrierPan. Lat. 11(3)
293, Mar. 1Invests Constantius with the purple, presumably at MilanPan. Lat. 8(5).2.2 ff.; Chr. Min. 1.228 (day)
293?, Mar. 18At RavennaCJ 6.8.1
293, May 2At MilanCJ 4.24.9
293, May 19At VeronaCJ 6.59.2
293, autumnVisits LugdunumP. Bastien, Le monnayage de Patelier de Lyon (Paris, 1972), 218 nos. 560–561
294, Oct. 27At Rome?CJ 9.16.5(6)
295, Mar. 21At MilanConsultatio 5.7
295, Dec. 21At MilanFrag. Vat. 292
296, Mar. 31At AquileiaFrag. Vat. 313
296, summerOn the RhinePan. Lat. 8(5).13.3
296, autumnFighting in SpainP. Argent. 480, 1 verso 3
297, Mar. 1On campaign in MauretaniaPan. Lat. 8(5).5.2, cf. ILS 645 (Tubusuctu)
298, Mar. 10At CarthageFrag. Vat. 41, cf. RIC 6.422–426, Carthago 1, 2, 10–28 (FELIX ADVENT AUGG NN)
298?Expedition to TripolitaniaCorippus, Joh. 1.478 ff., 5.175 ff., 7.530, cf. Pan. Lat. 9(4).21.2
299?Goes from Africa to ItalyILS 646 (Rome)
299?Enters Rome in triumphPan. Lat. 7(6).8.7
303, Nov.–Dec.With Diocletian in RomePan. Lat. 6(7).15.4 ff.; Chr. Min. 1.148; Eutropius, Brev. 9.27.2; Jerome, Chronicle 227 (joint triumph)
304, after April 21?Leaves RomePan. Lat. 7(6).8.8, cf. Passio Sabieni (BHL 7451–54)
304/5, winterMeets Galerius at an unknown locationLactantius, Mort. Pers. 18.1
305, May 1Resigns the imperial power at MilanEutropius, Brev. 9.27.2; Jerome, Chronicle 228; Zonaras 12.32

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