Thanks Robert. I remember watching that first tiny little flower bud and thinking that it would be a single because it was so small. Then it just kept getting bigger and bigger and seemed like it would never open. When it finally did, I was amazed at how full the flowers were.
It is relatively fertile, but so far I haven't recovered any reblooming seedlings from it yet. I do have one that was very mildew resistant, while all of its siblings and other rose seedlings were getting it pretty bad. That once-bloomer is now on HelpMefind too (as MR1), but I still have to find and add photos.