In the version that I sing, learned from the singing of Harry Cox there are a couple of lines that run:-

... and he shot his own Polly
In the room of a swan.

... but the song doesn't tell us whether it is The Swan at Falmer or The Swan at Southover, which are two lovely old pubs within four miles of where I live in Lewes.

Perhaps I should explain that in some parts of England "in The room of" means "mistaking him/her/it for".)