When I was in primary school I started reading a book about a boy living in the middle ages, he runs away from home and his rich father, I left him stowing away in the back of a wagon. At this point I left the scool and never found the book or the title again. Please help me find a title for this book.

When I was in primary school I started reading a book about a boy living in the middle ages, he runs away from home and his rich father, I left him stowing away in the back of a wagon. At this point I left the scool and never found the book or the title again. Please help me find a title for this book.
I think this story might be about the early times, but I am not sure. Sorry! SORRY!