Áedán mac Gabráin
The text consists chiefly of two sections, each of which seeks to trace the lineages of sixth-century rulers to a common ancestor. The first section is concerned with the Coeling or descendants of Coel Hen, including the houses of Rheged and Eidyn. The second takes Dyfnwal Hen as its ancestor figure, who is here identified as a grandson of the Roman emperor Magnus Maximus. A confused genealogy of Áedán mac Gabráin, ruler of the Gaelic kingdom of Dál Riata, appears, though here (as in other medieval Welsh sources) Áedán is given as the father, rather than son, of Gabrán mac Domangairt.