Further labeling errors occur when peonies hit the Netherlands. It is a familiar story that also happens with lilium once they go over for propagation. They either don't like the name or think they will sell more with a different name. It is frustrating for the buyer who is trying to have a collection with true named varieties. I also find it unkind to the hybridizer who came up with the plant and named it.
Without a DNA test, it will never fully be known.