Fragmentary Annals of Ireland
The Fragmentary Annals of Ireland or Three Fragments are a Middle Irish combination of chronicles from various Irish annals and narrative history. They were compiled in the kingdom of Osraige, probably in the lifetime of Donnchad mac Gilla Pátraic (died 1039), king of Osraige and king of Leinster.
Source: Wikipedia — Fragmentary Annals of Ireland (CC BY-SA 4.0)