The Prophecy of Berchán, an 11th-century verse history of Scots and Irish kings presented as a prophecy, is a notably difficult source.
Kenneth is Kenneth MacAlpin (Cináed mac Ailpín); Áed, Niall's son is Áed Findliath, who died on 20 November 879; and St Cyrus's day was 16 June, on which day a solar eclipse occurred in 885 [REF].