The life of Firmin the Martyr relates that after he had been executed the senator Faustinian took the body and buried it in his personal cemetery in "Abladana".

The monks claimed they had found the body of Saint Firmin, and said the relics in the Amiens Cathedral were not authentic.

After lengthy controversy the relics in the cathedral were opened on 10 January 1715 and the 13th century inscriptions were taken to prove their authenticity.

Higher up a bay and niches are arranged between pilasters with Doric capitals that support the triglyphic entablature, on which there is a triangular pediment.

Under the choir there is a vault in the place where the body of Saint Firmin was miraculously discovered.

The church holds several sarcophagi and 15th century bas-reliefs relating to the history of Saint Firmin.

[1] The church holds a noted statue of Notre Dame des Sept Douleurs (Our Lady of Seven Sorrows).

[4] The foundation charter records donations to Saint-Acheul by Count Enguerran of Boves and his vidame Eustache.

It was issued in the first year of Enguerran's rule, and praises his restoration of law and order.

[6] The abbey bought land in the Neuville area in the 13th century and established vegetable gardens, from which it received payments from the cultivators.

Every year on a given date all the cultivators had to drain the canals around their plots and clean out all the wild plants that had been growing in the waterways and on their banks.

Louis Sellier, a layman who later became a Jesuit, founded a pensionnat at Amiens in 1797, which he gave to the Fathers of the Faith including Jean Nicolas Loriquet in 1803.