Lebor Gabála Érenn
There are a handful of sources slightly predating the "Lebor Gabála Érenn" covering significant portions of essentially the same list of Milesian High Kings (though following a discrepant chronology), starting with the "Laud Synchronisms" estimated to have been compiled (part of Laud 610). The oldest section of the "Lebor Gabála Érenn" "Roll of Kings" is taken from the poems of Gilla Cómáin mac Gilla Samthainde, written .