Any shepherd. So called in allusion to the name familiar from its use in Greek idyls and Virgil's first Eclogue. In the Shepherd's Calendar Spenser calls Chaucer by this name.
Heroes and their feats Fatigue me, never weary of the pipe Of Tityrus, assembling as he sang The rustic throng beneath his favourite beech.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894