Mystery plant day

Today I was frustrated by not one, but two mystery plants in my garden.

The first plant is a charming Primula (primrose) that has naturalized in 5 or 6 different spots here. I remember the day I bought this plant, a friend who worked at a nearby nursery insisted I buy a handful of small pots of a bloomed out Primula. She said the plants looked sorry but would be so happy in my garden. At that point I had only bad luck with primroses but she offered them to me for $1 per pot and ever the optimist, I tried primroses again.

This plant is so wonderful, it has no problem in dry shade. Give it some moisture and it's even happier! The one problem is that every tag I have for it in my garden has the top portion broken off. I know it originated from Sunny Border Plants but I don't have the variety name.
How sad :-(
The second mystery plant is this one. It is in my shade garden and was given to me by the same woman who encouraged me to buy the white Primulas. This plant has seeded around a little bit (not aggressively). I think it might be Cimicifuga? It blooms in the fall with tall white candle-like blooms. If you scroll up to the first photo you can see what the foliage looks like a little later in the season. It is at the right of the Primula.

Any ideas?