Definition from Wiktionary, the free dictionary
Proper noun 
- A female given name, variant of Coline, from Nicoline.
- 2007 Laurie Lindeen, Petal Pusher, Atria Books, ISBN 0743292324, page 137
- Her name is spelled Coleen making her "Co" with a hard O and not Colleen by any stretch - I'm suspicious on her authority on the subject.