Tom's R. soulieana derivative is listed on HMF with the following parentage. Zorina x [R. soulieana x Europeana] x Sunsprite. I'm assuming that is the properly attributed pollen parent of Flutterbye.

My only complaint against Flutterbye is that is always classified at rose "nurseries" as a "shrub." Accordingly and following the guidance provided by a local seller of roses, I recommended Flutterbye to a friend who planted it as a shrub in a mixed rose shrub border. You can imagine her surprise when Flutterbye produced huge, rocketing growths that only flowered at end of the growth the first year. She was convinced that the rootstock had taken over and that "suckers" had taken over Flutterbye's section of the rose border.
THIS IS NOT A SHRUB. It is a climber, or at a minimum a shrub that needs to be pegged down. It produces long, vigorous and fiercely pricked canes on a regular basis. This makes for a rather wild looking plant in late summer, with a more in-control scaffolding of shrub (flowering very nicely, I might add), with wild looking water sprouts shooting off in all directions. It is a wonderful rose -- vigorous, free flowering and disease-free, but it is NOT a plant to be treated like a typical shrub rose. Either give it room to sprawl about in its own way, or treat it like a climber (which I don't think it would like). And remember -- it has lots and lots of prickles. It was a pain in the derriere to move for my friend this winter. It now resides in her garden where it has room to do its thing, and well away from her more controlled shurb rose border. I sure wish I'd known its true character before!

Available from - Brushwood Nursery
http://gardenvines.com/shop/