No idea about "riley"

"It's when she cam tae the banks o the Doon
the waater was rou'in DRUMLIE o
She's looted doun an taen aaf her shoun
tae wade it wae the gypsy laddies o"

The spot on the river Doon is to this day known as the gypsies steps.

I once had a number of examples of oral tradition being proved accurate, memory is now not what it was, two only now come to mind:--

[1] In the East Neuk of Fife a certain burial mound was orally reputed to contain a hoard of silver. On being excavated by E.U., and they certified that the mound, some 950 years old, had never previously been excavated, a hoard of silver was found therein.

[2] During a drought in the early 19th. C. in the N.E. oral tradition had it that there was a well at a certain spot. The area was excavated and at a depth of 36ft. below the existing surface what was claimed to be a Roman well was found. That takes us back at least 1500 years.

One of the collectors remarking on the literacy of the Scots also makes mention of their vast grasp of oral lore.