E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Louis XVI. was called the Baker, the queen was called the bakers wife (or La Boulangère), and the dauphin the shop boy; because a heavy trade in corn was carried on at Versailles, and consequently very little was brought to Paris.
The return of the baker, his wife, and the shop-boy to Paris [after the king was brought from Versailles] had not had the expected effect. Flour and bread were still scarce.A. Dumas: The Countess de Charny, chap. ix.