Fiona Gibney [Edit] By Sticky Facts Editorial StaffFiona Gibney biography, ethnicity, religion, interesting facts, favorites, family, updates, childhood facts, information and more:What is Fiona Gibney nationality?IrishWhat is Fiona Gibney's occupation?ActressFiona Gibney sister(s):Jennifer Gibney Fiona Gibney family:Brendan O'Carroll Tags: actressirish Suggested Posts Lena Headey Facts Arnold Schwarzenegger Facts James Gandolfini Facts Mila Kunis Facts Bruno Mars Facts Tom Cruise Facts Madonna Facts Julia Roberts Facts