"While eating oysters in a Cheapside inn, the cards, dealt by a red-faced, fat middle-aged lady, told him to get hired as a valet for a Lord Windermere." The Other Log of Phileas Fogg by Philip Jose Farmer. (Page 48)[Bold is mine.]
Lord and Lady Windermere are from the Oscar Wilde play "Lady Windermere's Fan". I will check this out more fully tomorrow, and see if I can find Passepartout in the play.
Here's a link to the online text if you can't wait. http://en.wikisource.org/wiki/Lady_Windermere%27s_Fan