You're welcome, Aileen. Congratulations on catching the peony bug ;)
Since March I have been looking at so many tree peony pictures on-line and the Shimane Chojuraku and Kamata Nishiki are two of my favourites for lavender-pink. I like fragrance in the flowers too, so you got yourself a winner there!!
Here is my new plant, you can see the leaves are a little more rounded than yours.
The white tag wrapped around the main stem had the name on it, and the other tag was like this-
If I'm lucky, mine will turn out like yours (the flower picture on the tag is almost identical to your flower pictures), and with fragrance. Regardless of the name!