Lady Diana (?) in Shade

This clematis is several years old. I used to coddle it with a climbing structure. It grows near a compost bin and by a growing pussy willow tree. now the structure is gone and I let her grow as she wishes through the peonies, pussy willow branches, and on the ground.
There are two other clematis growing in there too. Always a surprise to see them return each year!

After posting this and looking at the flowers I am thinking that this is the clematis "Gravetye" which is planted in the same area. I'll go out and take a better look in the shrubs.