“Do you see this ram? His name is Robin. Here, Robin, Robin, Robin.
... We will get a pair of
scales, and then you, Robin Mutton [Panurge], shall be weighed
against Tup Robin, ... etc.” —Rabelais: Pantagruel, iv. 7.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894