Dermot O'Neill [Edit] By Sticky Facts Editorial StaffDermot O'Neill biography, ethnicity, religion, interesting facts, favorites, family, updates, childhood facts, information and more:What is Dermot O'Neill nationality?IrishWhat is Dermot O'Neill's occupation?Actor Tags: actorirish Suggested Posts Beyoncé Knowles Facts Chester Bennington Facts Robert Downey Jr. Facts David Beckham Facts Madonna Facts Marlon Brando Facts Charlize Theron Facts Sylvester Stallone Facts