We'll have him share a cell with other boys of his own age.

He needn't have been caught, but he's very stupid for a boy of his age.

Physically he was much stronger than the average boy of his age.

And how much would a boy of his age understand?

James had never known a father, and this man would be the best influence a boy of his age could possibly have.

He put me at ease with boys of my own age.

This was something exciting for a boy of my age.

Most boys of his age like the chance to show off.

That he had not sought out Harry or any other boy of his age?

It is too late for a boy of your age to sit up.