A plague on this vagary!
I’m in a nice quandary
Of hasty tone
with dames unknown
I ought to be more chary!
It seems that she’s a fairy
From Anderson’s Library!
(And i took her for
The Proprietor
Of a Ladies’ Seminary!)
(((From “Iolanthe” by W.S. Gilbert and Arthur Sullivan)))
:’)
Whoops — Thomas the Rhymer / True Thomas was based on a 13th century Scottish guy, or an even older tale got attached to him. My first encounter with a version of the poem was in E.R.Eddison.
http://myths.e2bn.org/mythsandlegends/origins530-thomas-the-rhymer-and-the-queen-of-elfland.html