– His father is a school inspector and his mother is a French teacher.
– He schooled at Presentation Brothers College Cork.
– Cillian has a younger brother, Páidi, who is a design engineer.
– Most recognizable/trade mark feature: Piercing blue eyes.
– Cillian can speak fluent English, French and Irish.
– Cillian has two sons Carrick (born July 2007) and Malachy (born December 2005).
– He began his performing career as a rock musician.
– He is a vegetarian.
– Cillian’s favourite music genres are Jazz, Blues, Rock.
– His favorite horror movie is The Shining.
– His nickname is “Cilly.”
– His first born son is called Malachy and was born December 4th, 2005, weighing 7 pounds and 5 ounces.
– He proposed to his wife while hill-walking in Ireland.
– He has a younger brother, Páidi and two sisters, Sile and Orla.
– He greatly admires actor Liam Neeson. Looks at him as a surrogate movie dad.
– Cillian played Rugby at Presentation Brothers College.
– At the 9th Annual GQ Men of the Year Awards, Cillian was awarded Film Actor of the Year for 2006.