“the Battle of the Book, which took place in the kingdom of Cairbre Drom Cliabh in north-west Ireland between 555 and 561, two clans went to war after St. Columba had illegally copied a version of the Psalms belonging to St. Finnian, most likely the only war to even begin over copyright infringement.”
―
Ed West,
Saxons vs. Vikings: Alfred the Great and England in the Dark Ages