He helped Dui Ladrach overthrow Airgetmar , and later killed Dui to take the kingship himself .
Lugaid Laigdech , son of Eochu mac Ailella , was , according to medieval Irish legend and historical tradition , a High King of Ireland .
son helped Dui Ladrach overthrow Airgetmar , and later killed Dui to take the kingship himself .
Lugaid Laigdech , son of Eochu mac Ailella , was , according to medieval Irish legend and historical tradition , a High King of Ireland .