In 2019 Michael Kerrigan published "An Universal Wolf: The Life & Times of Redmond O'Hanlon". It is an historical novel that is based on real people and actual events. Part fact, part legend, the tale is composed of history, myth, and conjecture. Persons and events described within it relate to an obscure but significant period in Irish history: significant because the struggle between the natives and the settlers that began with the Plantation of Ulster continues still, 400 years later. Traced back to the original Norman Invasion of Ireland in 1169, however, establishes The Troubles as the longest-lived conflict in the history of the world.