Another unidentified plant

Still behind, but not quite so far!  Back blippling on 9th June

I think this has grown from a corm or bulb given to us by TonyG in 2019.  Hopefully Tony will see this and give us a name.  Last year there were lots of leaves, but no flowers.  This year, it has glorious dark purple buds opening into these blue flowers.   Quite spectacular.  Only problem is, I planted it a bit too close to the front of the border - it's spilling over onto the grass.  I'll have to try and move it back a bit in the autumn.