Here are links to translations of a ninth-century Irish poem about a cat and his monk. It was found written in the margins (or on the back) of an otherwise ecclesiastical manuscript. It is lovely.

Pangur Ban, Adapted from Thesaureus Paleohibernicus, edited and translated by Whitley Stokes, Cambridge, 1903, pp. 293-94

“Pangur Ban” — two versions, translated by Frank O’Connor and Eavan Boland

“Pangur Ban” translated by Anonymous

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“Pangur Ban” — the Old Irish Text