Nearby towns and villages include: Boisjean, Lépine, Verton, Airon-Saint-Vaast, Campigneulles-les-Grandes, Campigneulles-les-Petites and Ecuires.

Here are some hypotheses: Walliacum, is Galliacum, caused by mutation of W to G. 'Gallus ->Gaullois, Wailly being a border village of Picardy and therefore, of France.

After the refusal of the town council, the priest, Dubois obtained an estimate from architect Clovis Normand, and in the spring of 1883, work began with the financial assistance of the Vicomtesse.

Nothing much of the original sixteenth-century church remains, except for the choir, the nave of three vaults up to the triumphant arch and the lateral chapel.

The town was generously endowed during the preceding centuries with grand houses and still preserves its rural character thanks to a multitude of Picardy farms.

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They kept, at Wailly, huge sandstone blocks, called 'Sorcerers’ Rocks', of altar shape, on which, it's claimed, the 'Naudois' cut the throats of their victims.

These rocks are in various locations: five to the entry of Wailly, towards Airon; a huge one at the start of the woods and three or four opposite Boidin's wine-shop, at the junction with Church St. Today, these stones have all disappeared.

"Saint-Adrien the martyr, whose relics were preserved in Haynaut in the city of Grammont, was the object of special worship at Wailly.

The Bollandists relate the following: "October 3rd, 1516, Joan Le Fèvre, wife of Jacques du Bois, who lived at Wailly near Montreuil, was gathering vegetables in her garden when her mother, dead for the past 3 years, appeared before her and said: "Joan my girl, be assured, I am your mother.

Eight days later, she was preparing the kitchen fire, when suddenly, her mother appeared again and deprived her of her senses: "Learn this, that there will be no rest for you until you go and revere the relics of St. Adrien at Grammont!"

Jacques du Bois didn't hesitate for a minute and took her, accompanied by a large number of the townsfolk, to Grammont.

Immediately after she had kissed the relics of the glorious martyr, Joan opens her eyes and shouted: "Praise and blessings be to God and St. Adrien, I am cured!"