Commentary
Stewart Baldwin: 'There is no contemporary evidence for the parentage of Ivar. The mythical Ragnarr Lothbrok, his alleged father, is of very dubious historicity.'

Stewart Baldwin: 'He was the historical prototype of the Ivar the Boneless of the Icelandic sagas, which, however, cannot be trusted to give any historical information about him. The only certain information about him is given in the Irish annals during the period 856-873, and his possible role as king of York, though reasonably likely, is disputed by some.'
Family
ClaimDetailEvidence
Child +_____ mac Ímair (e850-) [S1006] [S2728] [S2730]
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Attributes
ClaimDetailEvidence
GenderMale
NameÍmar , King of Dublin [S2730]
Old Norse: Ivarr
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NameImar [S1006]
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NameÍmar (Ivar) , King Dublin (& York?) [S2728] [S2730]
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TitleKing of Dublin [S2728] [S2730]
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BirthNorway [S1006]
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Timeline
ClaimDateDetailAgeEvidence
Birthest 821 (819-823)
 
Death873Ireland [S2728] [S2730]
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Sources
IndexTitle
[S1006] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Ireland)" (v4.0 Updated 13 October 2019) (https://fmg.ac/Projects/MedLands/IRELAND.htm).
[S2728] Baldwin, Stewart, "Medieval Genealogy Newsgroup: Eve of Leinster and Radnailt of Dublin" (soc.genealogy.medieval, July 28, 1996 (corrected August 21, 1996)) (https://groups.google.com/d/msg/soc.genealogy.medieval/hki_hNDwY8I/ULhLcNURHRIJ).
[S2730] Baldwin, Stewart, "Medieval Genealogy Newsgroup: Llywelyn ap Iorwerth Ancestor Table" (http://sites.rootsweb.com/~medieval/llywelyn.htm).