Question: Who is the paternal grandfather of Fergus Mac Fogartaig?
Sentence (from "Fergus mac Fogartaig"): Fergus mac Fogartaig (died 751) (or Fergal) was King of South Brega of the Uí Chernaig sept of Lagore of the Síl nÁedo Sláine branch of the southern Ui Neill.
Relevant evidence: No