Eadweard I
Miniature from Matthew Paris's Historia Anglorum, c. 1253
Duke of Mercia
Reign15 September 1066 – 11 March 1100
PredecessorWulfstan II
SuccessorBeornwulf I of Mercia
Born21 January 1048
Northamptonshire, Kingdom of England
Died11 March 1100 (aged 52)
Northamptonshire, Kingdom of England
Burial
HouseHouse of Wulfing
FatherUnknown
MotherUnknown

Eadweard I (21 January 1048 – 11 March 1100) was Duke of Mercia from 26 September 1093 until his death in 1100. He became earl of Northamptonshire shortly before William the Conqueror's invasion of England and submitted. As his parents are unknown, the origin and how Eadweard became earl are also unknown. Some historians believe he was a distant cousin of king Harold Godwinson, others claim he was a Norman member of William the Conqueror's court. The most widely accepted claim, however, is that Eadweard was a minor Anglo-Saxon noble from Northamptonshire who rose to the status of earl just before the invasion.

He had three wives. His first wife, Octreda, bore five children, three of which reached adulthood. Octreda died in 1090 while pregnant with a sixth child. Eadweard then married Avice quickly afterward but she succumbed to smallpox a mere two months later. Two years later, he married the Franconian Heilwig and they remained married until Eadweard died. His second son to live to adulthood, Earl Rædwulf of Northamptonshire, was born to Heilwig.

He participated in the defensive war against the Norwegian king Harald IV, son of Harald Hardrada, in 1069 as a vassal of William I. In the aftermath, Eadweard conquered the lands around Northamptonshire and was crowned duke of Mercia in 1093.

In the aftermath of King Robert's death, a war of succession broke out between the Norwegian claimant Bodil of Essex and the Anglo-Norman Eadmund, and Anglo-Saxon Eorcenberht of Godwin between 1097 and 1109. Eadweard supported the Anglo-Norman Eadmund.

However, in 1100, Eadweard became ill with smallpox and quickly died.

Houses of Wulfing

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Alpín
mac Echdach
Domnall I
mac Ailpín

King of the Picts
812–862
r. 858–862
Kenneth I
MacAlpin

King of the Picts
810–858/859
r. 841/843–858/859
Giric
King of the Picts
c. 832–889
r. 878–889
Constantín I
mac Cináeda

King of the Picts
r. 862–877
Áed
Findliath

High King of Ireland
Máel Muire
ingen Cináeda
Flann Sinna
High King of Ireland
847/848–916
Áed
mac Cináeda

King of the Picts
d. 878
r. 877–878
?Rhun
King of Alt Clut
r. 872–878
Donald II
mac Causantín

King of Alba
r. 889–900
Constantine II
King of Alba
before 879–952
r. 900–943
Eochaid
King of the Picts
r. 878–889
Malcolm I
King of Alba
c. 900–954
r. 943–954
Indulf
King of Alba
r. 954–962
Cellach
d. 937
Dub
King of Alba
r. 962–967
Kenneth II
King of Alba
before 954–995
r. 971–995
Cuilén
King of Alba
r. 967–971
Amlaíb
mac Ilduilb

King of Alba
r. 973–977
Eochaid
d. 971
Kenneth III
King of Alba
before 967–1005
r. 997–1005
Malcolm II
King of Scots
c. 980–1034
r. 1005–1034
Constantine III
King of Alba
before 971–997
r. 995–997
Gille
Coemgáin
Giric
d. 1005
Boite
mac Cináeda

d. 1058
DonadaFindláech
Mormaer of Moray
BethócCrínán
of Dunkeld

Mormaer of Atholl
d. 1045
OlithSigurd
the Stout

Earl of Orkney
c. 960–1014
Gille
Coemgáin

Mormaer of Moray
d. 1032
Gruoch
of Scotland
fl. 1020–1054
Macbeth
King of Alba
1005–1057
r. 1040–1057
Duncan I
King of Alba
c. 1001–1040
r. 1034–1040
Lulach
the fool

King of Alba
before 1033–1058
r. 1057–1058
House of Dunkeld
Máel
Snechtai

Mormaer of Moray