Napoleon Disentimed — Hayford Peirce

The MacNair of MacNair, conman extraordinaire, pulled into a parallel universe by desperate revolutionaries ... finds his life endangered by madmen of every stripe ... desperately jumping from universe to universe and century to century, on the run from berserk Emperors, secret policemen, vengeful wives, and maddened doppelgangers, the supremely unruffled MacNair still finds time to save an empire, marry an heiress, and invent the two hallmarks of modern civilization, the indoor flush toilet and French Champagne! [Book 1 of the Orgone Time Travel Universe]