Fantasy: A boy is magically changed to look like a prince to act as his double

[Sharon]

Read the book synopsis a few weeks ago and don’t remember the title.
A boy is taken from his home village at a young age to live in the palace where he is magically changed to look like the prince to act as his double. Grows up there with the prince. At some point he gets shot instead of the prince.

[Rainbowheart]

Is this book for kids, teens, or adults?