"Despite advertising the post twice, including an advert in the local press, no one suitable was found to support the pupil in Penrhyncoch school, " said a council spokeswoman.
Republican presidential contender Rick Perry used a recent advert to complain that children could no longer celebrate Christmas openly, and that President Obama had launched a "war on religion".
Hollywood actor Brad Pitt is the current face of a campaign for the women's fragrance Chanel No 5, while actress Keira Knightley fronts an advert for the label's Coco Mademoiselle perfume.