The hero of Beattie's Minstrel.
And yet poor Edwin was no vulgar boy; Deep thought oft seemed to fix his infant eye, Dainties he heeded not, nor gaud, nor toy, Save one short pipe of rudest minstrelsy; Silent when glad; affectionate, though shy. And now his look was most demurely sad; And now he laughed aloud, yet none knew why. The neighbours stared and sighed, yet blessed the lad; Some deemed him wondrous wise, and some believed him mad.
Canto i. 16.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894