Unnamed flower

A back blip as I was very tired and had a really bad headache all day. Managed a little gardening late in the evening. We have recently grassed over an area that was becoming too wild to deal with and took most plants out. We obviously overlooked this plant, but I don't know what it is called.It has just come into flower. I think we might just leave it there now , it seems such a shame to move it.