Marriage
Marries Osthryth, daughter of Oswy of Northumbria
Role range: 0675-0704
Historical biography archive · Updated 2026-11-03
Athelred I Biography and Timeline
Follow Athelred I through 19 dated historical records for England.
Athelred I, historical timeline
A chronological timeline drawn from matching World History Database records.
19Distinct records
1 of 1Page
675–796Years on this page
675
Succession
Succeeds as King of Mercia
Role range: 0675-0704
676
Capture of Kent
Athelred I sacks Rochester & re-establishes control over Kent
Role range: 0675-0704
Rule of Kent
Athelred I sacks Rochester & re-establishes control over Kent
Role range: 0675-0704
Siege of Rochester
Athelred I sacks Rochester & re-establishes control over Kent
Role range: 0675-0704
679
Battle of River Trent
Defeats Egfrith, the Northumbrian King, Mercia becomes the major power
Role range: 0675-0704
691
Exile of Athelred I
Gives sanctuary to Wilfred after he is expelled from Northumbria
Role range: 0675-0704
697
Assassination of Osthryth
Athelreds Queen is assassinated by Mercian nobles for the murder of Peada 40 yrs ago
Role range: 0675-0704
704
Abdication
Abdicates in order to enter the monastery at Bardney where Osthtyth is buried
Role range: 0675-0704
774
Succession
Succeeds as the King of Nortumbria, 1st term
Role range: 0774-0779
779
Exile of Athelred I
Driven out of his Kingdom by Elfwald, son of Oswulf
Role range: 0774-0779
790
Exile of Athelred I
Orders the assassination of Eardwulf but he escapes into exile
Role range: 0790-0796
Succession
Succeeds as the King of Nortumbria, 2nd term, following the expulsion of Osred II
Role range: 0790-0796
792
Assassination of Osred
Osred is recaled to the throne but is assassinated instead
Role range: 0790-0796
Death of Athelred I
Osred is recaled to the throne but is assassinated instead
Role range: 0790-0796
Marriage
Marries Elfleda, daughter of Offa of Mercia
Role range: 0790-0796
793
Siege of Lindesfarne
The Vikings 1st land off the coast of England looking for the treasures of St Cuthbert
Role range: 0790-0796
796
Assassination of Athelred I
Assassinated by Ealdred, a supporter of Osbald
Role range: 0790-0796
Death of Athelred I
Assassinated by Ealdred, a supporter of Osbald
Role range: 0790-0796
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.