Biography:From Wikipedia, the free encyclopedia. Pauline McLynn (born 11 July 1962) is an Irish actress, comedienne and author, best known for playing Mrs Doyle in the Channel 4 sitcom Father Ted, and Libby Croker in the Channel 4 comedy drama Shameless. Description above from the Wikipedia article Pauline McLynn, licensed under CC-BY-SA, full list of contributors on Wikipedia.