[1] For example, O'Rahilly's historical model proposed that the Domnann were a P-Celtic, pre-Goidelic people who, along with the Galeóin, invaded the south-east coast of Ireland from Britain.
[2] O'Rahilly's theory of P-Celtic preceding Goidelic in Ireland is not widely accepted by experts today, but the idea of some connection between the British and Irish tribes of similar names remains.
[3] In early Irish literature, the Fir Domnann were located in Cóice Laigean (Leinster).
A probably 7th-century Irish poem credits their ruler, Mess-Telmann, with the over-kingship of the province and with wielding power from the royal site of Leinster at Dún Áilinne.
The place-name Inber Domnann, now Malahide Bay inlet in north County Dublin on the east coast of Ireland, preserves the tribal name.