Potato identification help

[Digeroo]

I have a volunteer not planted by me.  Covered in lovely flowers reddish blue,  more flowers than any other potatoes on entire site.  Stalks reddish.  Not Red Duke of York (quite different).  It has much thicker stalks and bigger leaves.  Could be in the flower border.  Any suggestions please.   Was going to dig it up but the flowers have given it a reprieve.  And interestingly different from all other volunteers. 

Certainly not blue danube no one in their right mind would call the flowers blue more red than blue.

It may be from a seedling, but only third year as lottie and a very big strong plant.

I am hoping it is a cross between blue danube (mum?) which were there two years ago and red duke of york which were nearby. 

[Digeroo]

[cornykev]

Have a firkle and see what the spuds look like.   ::)

[djbrenton]

Have a firkle and see what the spuds look like.   ::)

I would be very discreet if you do. Once you get a name for firkling on an allotment site, you'll always be looked at funny.

[chriscross1966]

Highland Burgundy Red? IT has strongly coloured stems but I can't remember what the flowers are like... plus it's quite a vairable strain...