(Mr.). The Holy Spirit personified, in Bunyan's Pilgrim's Progress. He is lord of a house a little way beyond the Wicket Gate. Here Christian was kindly entertained and shown many wonderful sights of an allegorical character. Christiana and her party stopped here, and were similarly entertained.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Interpreter from Infoplease: