Tudy was a priest of Normandy and friend of St. Brioc, who created the style of bread known as the brioche in order to bring wayward parishioners into the fold.  Tudy was confronted with similarly poor attendance as St. Brioc, and he also resolved to bring more people to the church by feeding them better than they could feed themselves.  He could have asked his friend for some brioche, but he did not wish to make more work for him.  He instead decided to develop a winning recipe of his own.

Not being as skilled at baking as Brioc, Tudy cast about elsewhere for inspiration.  His idea was to combine popular ingredients to see if the resulting dish would spark interest among the people of Landevennec.  Tudy served chocolate baked with leeks, beef stuffed with hazelnuts, and Scottish haggis in wine sauce, and still he saw his congregation dwindle.  He sat on the steps of his church one day, dejectedly munching on bread and a sausage, when a far better idea occurred to him: he would cut a piece of bread down the middle and place a sausage inside!  He called the treat Franc-Foudre, roughly meaning "Frankish Lightning," and he was sure it would do the trick in bringing parishioners to his church.

Much to Tudy's surprise, his latest confection was heaped with scorn: not only was there no demand for sausage in a bun in Normandy, he soon attracted a critical eye from the authorities.  Complaints about Tudy's culinary experiments soon reached the ears of Degustibus, the Bishop of Paris, who published a scathing letter which called the Franc-Foudre an abomination against the laws of God and accused Tudy of committing many of the same offenses as an alchemist.  Many would have been broken by the experience, but Tudy meant well, and rather than incur one of the horrible punishments suggested by Degustibus (being held upside down in a bucket of old anchovies, for one), he repented and did his best to prevent others from making the same error.

Brioc was a Welsh priest who traveled widely in the Celtic world doing missionary work.  After founding churches in Wales and Cornwall, he set his sights on the mainland and arrived to Brittany.  He founded a church in the small town of Landebaeron and was soon subject to culture shock.  While the Celtic peoples of Britain were quite pious, their counterparts' customs posed a unique challenge for Brioc.

While the nation of France was still a few hundred years over the horizon, 6th century Bretons partook in a few habits which we would recognize today, the chief of which was the adoration of bread.  In fact, in what may have been a holdover from pagan times, the people of Landebaeron would meet for a Sunday market and often be so occupied with squeezing baguettes and tasting flaky croissants that they would forget to attend church.  Brioc was much concerned for their spiritual condition, and he recognized that he would have to offer a viable alternative to the landebaëronnais' beloved baked goods.