Matt Rubinstein

The most precious manuscript held by the Royal Irish Academy is RIA MS 12 R 33, a sixth-century book of psalms known as an Cathach (‘The Battler’), or the Psalter of St Columba. It is believed to be the oldest extant Irish psalter, the earliest example of Irish writing – and the world’s oldest pirate copy. According to tradition, St Columba secretly transcribed the manuscript from a psalter belonging to his teacher, St Finian. Finian discovered the subterfuge, demanded the copy, and brought the dispute before Diarmait, the last pagan king of Ireland. The king decreed that ‘to every cow belongs her calf’, and so the copy of a book belonged to the owner of the original. Columba appealed the decision on the battlefield, and defeated Finian in a bloody clash at Cúl Dreimhne. No trace remains of Finian’s original manuscript, if it ever existed. Only ‘The Battler’ survives.