Looks like and Aquilegia, as to which one - no idea.

They self seed all over the place so its probably a cross - and a pretty one!

thanks, I have lots of aquilegia, but none like this. It just seems to have a stem and a flower , no leaves. thanks for your input.

I can see the leaves in your photo. It's a variety of Aquilegia vulgaris.

Aquilegia

Lovely blue. Mine are all variations on pink/purple..