He fought a sea battle against the descendants of Éber Finn, and fought a battle against the Érainn at Mag Genainn in County Fermanagh, which resulted in Loch Erne bursting from the ground.
Mofebis's son Eochu Mumu killed him in vengeance in the battle of Sliab Belgatain.
[1] Geoffrey Keating adds that during his reign, his son Aengus Olmucada conquered Scotland.
[2] The Lebor Gabála Érenn synchronises his reign with those of Piritiades and Ofratalus in Assyria.
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