(red headed women and horses... what could possibly go wrong)
Those little girls and their flame-red hair are inexpressibly beautiful. Thanks for posting that remarkable picture.
The Irish, being an island and relatively poor for centuries, bred this distinctive subgroup of people. The aborigine Irish bog people from the Stone Age were very small, with black hair and blue eyes, according to my tour through the Irish Archaeological Museum in Dublin.
I read elsewhere that the red hair was a genetic “combustion” from when the blond Vikings entered Ireland for conquest or resources (via Dubln Bay north of Dublin, south of Drogheda) around the year 841, raping, seducing and possibly even marrying the dark-haired Irish, for what it was worth in those circumstances.