The only extant manuscript, in the private possession of the Earl of Dalhousie and kept at Brechin Castle, Scotland, is fragmentary; what we have of the Historia is found on folios 1r-12r.
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The text is important, among other things, because it constitutes (in Latin translation) an independent version of Þjóðólfr of Hvinir's Ynglingatal besides the text in Ynglinga saga in the Heimskringla.
Historia ecclesiastica gentis Anglorum | Historia Regum Britanniae | Historia destructionis Troiae | Historia Brittonum | Vive la Historia | Historia Salonitana | Real Academia de la Historia | Page from Thomas' Historia Salonitana | Museu d'Història de Barcelona | ''Historia Roderici'', ms. 9/4922, Real Academia de la Historia | Historia naturalis palmarum | Historia Naturalis | Historia Ecclesie Abbendonensis | Historia Ecclesiastica gentis Anglorum | Haciendo Historia | De Historia Stirpium Commentarii Insignes | Algo habrán hecho por la historia de Chile |
Heimskringla, Fagrskinna, Ágrip and Historia Norwegiæ all relate that Halfdan drowned when he fell through the ice at the inlet Røykenvik in the lake Randsfjorden on his return home from Hadeland.