This account has numerous demonstrable errors, but it claims that St. Monan was a companion of Saint Adrian, who was with him on the Isle of May when he suffered martyrdom, and then went on to Inverey in Fife and set up a chapel.
This chapel was rebuilt by David II of Scotland between 1329 and 1371, after he recovered from battle wounds thanks to the intercession of the saint.
Alban Butler follows the Aberdeen Breviary, making Monan a colleague of Adrian, and surviving the Viking attack in 874, only to be killed at Inverey.
William Forbes Skene rejects the account in the Aberdeen Breviary, and suggests that Monan is no other than the Bishop of Clonfert, Moinenn.
Due to the devastation wrought by the Dane Thorgest, many Scots clerics left Ireland to find refuge with Kenneth MacAlpin, bringing Monan's relics with them.