Contains Kilt Pin Reels.

This dance is so-named because it is a close derivative of the dance <<ddd:St George's Cross#17420>> with the reverse form, Kilt Pin, rather than Sash Pin reels.
St Piran is the patron saint of Cornwall; his flag has a white cross on a coloured ground (black in this case), the reverse of St George's coloured cross on a white ground.

The earliest known description of the flag as the Standard of Cornwall was written in 1838.
The flag is attributed to Saint Piran, a 6th century Cornish abbot. Saint Piran is supposed to have adopted these two colours from seeing the molten tin spilling out of the black ore in his fire during his supposed discovery of tin in Cornwall, thus becoming the patron saint of tin miners. 

(Source: <<http://www.scottish-country-dancing-dictionary.com/dance-crib/st-pirans-cross.html|Scottish Country Dancing Dictionary>>)