E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Owlglass (German, Eulenspiegel).
Thyl, son of Klaus (Eulenspiegel) prototype of all the knavish fools of modern times. He was a native of Brunswick, and wandered about the world playing all manner of tricks on the people he encountered. (Died 1350.)