This account claims that he is the ancestor of Irish clan, and that he was the builder of Castle Sween in Knapdale, Argyll.

However, other sources suggest the castle was built in the late 11th century by Suibhne MacAnrahan, brother of the High King of Ireland.

There he conquered half of the country before making peace with the King of Scots, by marrying his daughter.

[3] However, Suibhne's supposed ancestors Anrothan, Aodh Alainn and Donnshléibhe, do not appear in any contemporary sources.

[3][7] Sellar noted that Anradhán's supposed elder brother,[3] Domhnall an tOgdhamh ('Domhnall the Young Ox'),[6] is an ancestor of the O'Neills.

The account describes Swineruo as the owner of Castle Sween, and as Thane of Knapdale and Glassary.

The account states that, Iver was the ancestor of the MacIver Campbells, who were numerous in Glassary and Craignish.

According to Niall Campbell, 10th Duke of Argyll, who wrote in the early 20th century, the manuscript shows that the MacEwens of Otter were 'MacSweens'—male-line descendants of Suibhne.

[15] In the late 20th century, Sellar noted that the pedigree shows that the MacEwens did not descend from Suibhne, and that they took their surname from chief Eoghan, son of Gillespie.

Sellar stated that it seemed that Gillespie was a great-grandson of "Saibaran" (Skene's Sabarain), who was another one of Donnshléibhe's sons.

Sellar noted that, according to Leabhar Chlainne Suibhne, Donnshléibhe had twelve sons.