Note 461 — Chapter VI · THE KINGDOM OF SCONE.
Reading edition
See Fragments of Annals, Chron. Picts and Scots, p. 405. ‘Fortrenn was plundered and ravaged by the Lochlanns, and they carried off many hostages with them as pledges for tribute, and they were paid tribute for a long time after;’ and p. 172 for his wife being a daughter of Kenneth. His death is not recorded in the Irish Annals. He is mentioned up to 870, but not later.