Saoirse-Monica Jackson Erin Actor Louisa Harland Orla Actor Jamie-Lee O'Donnell Michelle Actor Dylan Llewellyn James Actor Nicola Coughlan Clare Actor Tara Lynne O'Neill Ma Mary Actor Kathy Kiera Clarke Aunt Sarah Actor Siobhan McSweeney Sister Michael Actor Tommy Tiernan Da Gerry Actor Ian McElhinney Granda Joe Actor Packy Lee Jordy Actor Michael Fry Fra Actor Amy Huberman Tara Actor Sinéad Keenan Aideen Actor Donna Traynor Donna Traynor Actor Lisa McGee Writer, Executive Producer Michael Lennox Director Caroline Leddy Executive Producer Noel Hogan Music Brian J. Falconer Producer Liz Lewin Executive Producer Jimmy Mulville Executive Producer