Who sat in the room? The scene of Are You Afraid of the Dark: The Tale of the Carved Stone; an unseen face where the boy named John Michael White the Canadian boy who is wearing the 18th century outfit

 That was only one way is the biggest solution!

What's sitting in the study room?

An unseen face is from the boy in 18th century outfit must be the one who wrote with the quilt feather pen to write.

Who is who?