Name: Charlotte Salt Lake City, Utah (Zone 7a) genealogist specializing in French
Looks like Spring Bliss to me, but database doesn't shew it reblooms. Boundless and Spring Bliss are very similar. You may have to obtain and grow both to identify it.
Thanks so much for all of your suggestions!
Whatever it is, it's a keeper. It has great substance. The first flower still looks good even after considerable rain and wind over the weekend.