E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Goose and Gridiron.
A public-house sign, properly the coat of arms of the Company of Musiciansviz. a swan with expanded wings, within a double tressure [the gridiron], counter, flory, argent. Perverted into a goose striking the bars of a gridiron with its foot, and called The Swan and Harp, or Goose and Gridiron.
1
This famous lodge of the Freemasons, of which Wren was Master (in London Honse Yard), was doomed in 1894.