Sorry if this has been asked a hundred times. 
I am writing about a boy who is going to be in some rough situations (fighting dragons) and I'm wondering what a believable age for him would be while staying in the age group of MG. I was thinking around 13-14.
Any thoughts?
Thanks everyone for all the help!

I am writing about a boy who is going to be in some rough situations (fighting dragons) and I'm wondering what a believable age for him would be while staying in the age group of MG. I was thinking around 13-14.
Any thoughts?
Thanks everyone for all the help!