on hpotterfam.com
Yes. If you look on the Internet and search Harry Potter family tree/geneology, you should be able to find a family tree that shows you that Harry is a great descendant of one of the Peverells. The one that got the cloak.
In the room with the Black Family Tree
there a re 32 families
J.K. Rowling has a specific diagram on her website that shows descendants of Harry's generation, Ron's, Hermione's, Luna's, and Draco's. There is also a Black family tree. See related links.
The Black family tree tapestry is described in Chapter 6, The Most Noble and Ancient House of Black in Harry Potter and the Order of the Phoenix.
The tree outside the Owlery, the one that is sparkly
This is not a sentence in any of the Harry Potter books.
Well...One of the tree's name in the harry potter books are The Whomping Willow
harry potter
Harry Potter and Ron Weasley crashed into the Whomping Willow.
The tree J.K. Rowling was drawing during the ABC special was an image of the Whomping Willow, a magical tree from the Harry Potter series. The Whomping Willow plays a significant role in the story as it guards the entrance to the secret passage leading to the Shrieking Shack on the Hogwarts grounds.
Carpe retractum on tree