Question: Who is Domnall Mac Áeda's paternal grandfather?
Sentence (from "Áed Findliath"): Áed mac Neíll (died 879), called Áed Findliath ("fair-grey Áed"; Modern Irish: "Aodh Fionnadhliath") to distinguish him from his paternal grandfather Áed Oirdnide, was king of Ailech and High King of Ireland.
Relevant evidence: No