(Question)
I have a number of these plants, but do not know what its called. Please help.
(Answer)
These beautiful plants are Geranium phaeum ‘Samobor’. They are commonly known as hardy geraniums. They clump beautifully and are very easy care. These sites may give you more information on their care:
https://www.perennials.com/plants/geranium-phaeum-samobor.html
https://www.bluestoneperennials.com/GESA.html