In 843 the Annals of Ulster record that Artacán mac Domnaill was "deceitfully killed" by Ruarc mac Brain, but no further identification or titles are given. Likewise in 846, when he fought alongside Máel Sechnaill mac Máele Ruanaid and was defeated by Tigernach mac Fócartai no titles are given.
The Annals of Ulster mention the death of Artacán mac Domnaill in 843, stating that he was "deceitfully killed" by Ruarc mac Brain, but without further details about his identity or rank. Similarly, in 846, when he fought alongside Máel Sechnaill mac Máele Ruanaid and was defeated by Tigernach mac Fócartai, no titles are given for either party.