Question: Who is the paternal grandfather of Donal Iv O'Donovan?
Sentence (from "Donal III O'Donovan"): Donal III O'Donovan , The O'Donovan of Clancahill, born before 1584, was the son of Helena de Barry and Donal II O'Donovan, The O'Donovan of Clancahill.
Relevant evidence: Yes