List of state leaders in 867

[edit] Asia

Bohai/Balhae - Da Qianhuang/Dae Geon-hwang, King of Bohai/Balhae (857-871)
Byzantine Empire - Basil I the Macedonian (Βασίλειος Α'), 867 - 886)
China (Tang Dynasty) - Yizong, Emperor of Tang China (859-873)
Gurjara - Mihira Bhoja I, Pratihara King of Gurjara (c. 836-886)
Japan - Emperor Seiwa, emperor of Japan (858-876)
Silla - Gyeongmun, King of Silla (861-875)

Asturias - Alfonso III the Great, King of Asturias (866-910)
Bulgaria - Boris I, Knyaz of Bulgaria, (852–889)
Byzantine Empire - Basil I the Macedonian (Βασίλειος Α'), (867 - 886)
Danelaw - Guthrum, King of the Danelaw (854–890)
East Anglia¹ - Edmund, King of East Anglia (855–870)
England (Wessex) - Ethelred of Wessex, Bretwalda (865–871)
Friesland - Rorik, King of the Danish Vikings in Friesland (850-880)
Mercia - Burgred, King of Mercia (852–874)
Northumbria² -
1. Osbert, King of Northumbria (849–867)
2. Aelle, King of Northumbria (867–867)
3. Osbeorht, King of Northumbria (867–867)
4. Ecgberht I, King of Northumbria (867–872)
Ireland - Aedh Finnliath, High King of Ireland (861–876)
Scotland - Constantine I, King of Scots and Picts (862–877)
Strathclyde - Arthgal f Dyfnwal, King of Strathclyde (816–872)
Venice - Orso I Participazio, Doge of Venice (864-881)
Wales - Rhodri Mawr ap Merfyn, King of Gwynedd (844–878)
Western Francia - Charles the Bald, King of Western Francia (843-877)

Though East Anglia is traditionally perceived to have been in the heptarchy it was a largely independent kingdom until its conquest by the Danes in 870. All other members of the heptarchy, apart from Mercia and Northumbria, had been conquered by Wessex and by this time had no form or king. Mercia was unique in its maintenance of an independent dynasty during the heptarchy.
Northumbria was conquered in 867 by Halfdan, Ivar the Boneless and their Danish Great Heathen Army. They imposed a puppet king on the state. Immediately prior to conquest a dynastic dispute was occurring which weakened the kingdom.