Youngest brother of the “fair burd Helen.” Guided by Merlin, he
undertook to bring back his sister from Elf-land, whither the fairies
had carried her, and succeeded in his perilous exploit. (Ancient
Childe Rowland to the dark tower came;
His word was still `Fie, foh, and fum,
I smell the blood of a Britishman.'
Shakespeare: King Lear, iii. 4.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894