'Dorothy Perkins'.

Thanks -- this does seem like a good guess. I found the rose outside a small town in Va., Boyce, and my uncle tells me that it grows commonly throughout the area, at old homes and along roads, so it does sound like a rose that had the enormous popularity that DP had, and has survived the years.

DP is supposed to be fragrant, though, I thought. This rose has no trace of fragrance at all.

I thought the flowers were just darling, and it does me a great favor of not demanding more than a couple hours of sun to do well. I think I'll have to keep it!