Lochlann

[2] Classical Gaelic literature and other sources from early medieval Ireland first featured the name, in earlier forms like Laithlind and Lothlend.

[6] The same source notes that in the sixth year of the reign of Maelsechlainn, circa 852 Amlaíb "the son of the King of Lochlann, came to Erin, and he brought with him commands from his father for many rents and tributes, but he left suddenly.

[9][10] Hona, who the annalists believed was a druid and Tomrir Torra were "two noble chiefs", "of great fame among their own people", and "of the best race of the Lochlanns", although their careers appear to have been otherwise unrecorded.

But his elder sons, with a great host, which they collected from every quarter, came on to the British Isles, being elated with pride and ambition, to attack the Franks and Saxons.

The demise of Gofraid, King of Lochlann and father of Amlaíb and Imhar (or Ímar) and Auisle[16] seems to be recorded in the Fragmentary Annals in 873:Ég righ Lochlainne .i.

This would make Raghnall Rognvald Eysteinsson of More in Norway and the brother of Harald Finehair (although the Norse sagas claim that Halfdan was Raghnall/Rognvald's grandfather).

[24] In The Dream of Rhonabwy, a company from Llychlyn led by March ap Meirchiawn (the King Mark of the Tristan and Iseult legend) appears among Arthur's vividly-depicted host.

[26] Bromwich suggests this appearance derives ultimately from a recollection of Welsh Triad 14, which depicts March ap Meirchiawn as one of the "Three Seafarers/Fleet Owners of the Island of Britain" – the Scandinavians being famed for their nautical skills.

In the Lebor na hUidre and the Book of Leinster the "huge and ugly" Fomorians are sea demons that battled with the Tuatha De Danann.

[29] The adventures of Prince Breacan of Lochlann are part of the mythology of the naming of the Gulf of Corryvreckan (Scottish Gaelic: Coire Bhreacain), a whirlpool between the islands of Jura and Scarba on the west coast of Scotland.

The story goes that the tidal race was named after this Norse Prince "said to be son to the King of Denmark" who was shipwrecked there with a fleet of fifty ships.

Failing to find him on Jura or Scarba he tried to leap across the strait to Lunga, but missed his footing on Eilean a' Bhealaich which sits in the middle of the channel between the two islands.