of Strathclyde / Alt Clut (complete list) – Ceretic Guletic, King (mid 5th century) Cinuit, King (late 5th century) Isle of Man (complete list) – Tutagual Theodovellaunus, King (c.485–c.495) Dingat, King (c. 495); Great Britain: England The Britons (complete list) – Vortigern, King (c.425–452) Riothamus, King (c.469) Ambrosius Aurelianus, Leader (late 5th century) Dumnonia (complete list) – Erbin ap Constantine (c.443–c.480) Geraint, King (c.480–c.514) Kingdom of Kent – Hengest, King (c.455–488) Horsa, King (c.455–488) Oisc, King (488–c.512) Kingdom of Sussex (complete list) – Aelle, King (c.477–c.514) Great Britain: Wales Kingdom of Ceredigion – Ceredig, King (424–453) , King (453–490) , King (490–523) Kingdom of Gwent (complete list) – Iddon ap Ynyr, King (480–490) Tewdrig, King (490–493/517) Meurig ap Tewdrig, King (493/517–530–540) Glywysing (complete list) – Glywys, King (c.470–c.480) Gwynllyw, ruler (c.480–523) Pawl, ruler (c.480–540) Mechwyn, ruler (c.480–c.500) Kingdom of Gwynedd – Einion Yrth ap Cunedda, King (c.470–500) Cadwallon Lawhir ap Einion, King (c.500–534) Kingdom of Powys (complete list) – Vortigern, High King Cadeyern Fendigaid, King (c.430–447) Cadell Ddyrnllwg, King (c.447–460) Rhyddfedd Frych, King (c.480–500) Cyngen Glodrydd, King (c.500–530) Ireland Ireland (complete list) – These kings are generally though historical, but dates are uncertain and naming some High Kings may be anachronistic or inaccurate. Niall Noígíallach, High King (generally thought historical: 4th–5th century) Nath Í, High King (4th–5th century) Lóegaire mac Néill, High King (5th century) Ailill Molt, High King of Ireland (459–478) Lugaid mac Lóegairi, High King of Ireland (479–503) Europe: Central Alamannia, tribal kingdom (complete list) – Gibuld, petty king (fl.470) Thuringia (complete list) – Bisinus, King (450–500) Europe: East Kingdom of the Gepids Ardaric, fl. c. 454 , fl. early 480s , fl. 488 Huns (complete list) – Octar, King (c.422–c.430) Rugila, King (c.430–c.434) Bleda, King (c.434–445) Attila, King (c.434–453) Ellac, King (453–c.455) Dengizich, King (?–469) Ernak, King (469–503) Europe: Nordic Agder (Norway) (complete list) – Víkar, King (c.475–c.495) Sweden (complete list) – Ongentheow, King (c.490–515) Europe: Southcentral Roman Empire: West (complete list) – Honorius, Western Emperor (395–423) Stilicho, power behind the throne (395–408) Constantine III, usurper Emperor (407–411) Priscus Attalus, usurper Emperor (409–410, 414–415) Jovinus, usurper Emperor (411–412) Constantius III, Western Co-Emperor (421) Valentinian III, Western Emperor (423–455) Galla Placidia, Regent (423–433) Aëtius, Regent (433–454) Joannes, usurper Emperor (423–425) Petronius Maximus, Western Emperor (455) Avitus, Western Emperor (455–456) Ricimer, power behind the throne (456–472) Majorian, Western Emperor (457–461) Libius Severus, Western Emperor (461–465) Anthemius, Western Emperor (467–472)