Liam Mac Uistin was a well-known author and playwright. His versions of ancient Irish stories and legends have been published in the Irish language by An Gúm. His plays for stage, television and radio have been produced in many European countries and in Canada, Australia and New Zealand. His television play The Glory and the Dream won the Radio Telefís Éireann award.

His stage plays have been produced at the Abbey and Peacock theatres in Dublin. His stories and plays have received many literary awards.

Liam Mac Uistin is the author of The Táin, (O'Brien Press) a hugely popular book for the young reader on this great Celtic epic.

He died in 2018.