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In page Dál Riata:

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This pact between the Dál Riata and Cenél Conaill was successful, first in defeating Báetan mac Cairill, king of the Dál nAraidi, then in allowing Áedán to campaign widely against his neighbours, as far afield as Orkney and lands of the Maeatae, on the River Forth. Áedán appears to have been very successful in extending his power, until he faced the Bernician king Æthelfrith at Degsastan c. 603. Æthelfrith's brother was among the dead, but Áedán was defeated, and the Bernician kings continued their advances in southern Scotland. Áedán died c. 608 aged about 70. Dál Riata did expand to include Skye, possibly conquered by Áedán's son Gartnait.[citation needed]