The original (albeit lost) manuscript seems to date from the early years of the reign of Kenneth II of Scotland (who ruled Scotland from 971 until 995) since he is the last king mentioned and the chronicler does not know the length of his reign.
By the 12th century, Giric had acquired legendary status as liberator of the Scottish church from Pictish oppression and, fantastically, as conqueror of Ireland and most of England.
This tale appears in the variant of the Chronicle of the Kings of Alba which is interpolated in Andrew of Wyntoun's Orygynale Cronykil of Scotland.
He subdued to himself all Ireland, and nearly [all] England; and he was the first to give liberty to the Scottish church, which was in servitude up to that time, after the custom and fashion of the Picts.
[3] The Latin material interpolated in Andrew of Wyntoun's Orygynale Cronykl states that King Dub was murdered at Forres, and links this to an eclipse of the sun which can be dated to 20 July 966.