Table of contents
1. The importance of national canon law in the reconstruction of pre-codicial bodies - 2. The citizen vote of 1527. The construction of the chapel, the organization of worship and the structuring of the offices. The recognition of the autonomous power of the Deputies – 3. The right of patronage over the Chapel: birth by foundation and endowment; its secularity; its character of justice. The chaplaincies. Civic nature of the Chapel – 3. The passage of the nineteenth-century subversive legislation. The right to claim and release patrons and the declaration of monumentality of a church – 4. Fabbricerie in the South: atypical nature and role of (individual) statutes. The provisions cited by the Statute of 1894. Clear conceptual distinction between Chapel and Deputation. The Chapel as a «sui generis institution» - 5. The right of patronage after the codification of 1917. The bull of Pius XI of 1927. Polysemy of the term “chapel”. Historical non-application to the Chapel, as an «institution sui generis», of the Lateran law on the building buildings. The post-conciliar legislation on patronage.

Abstract
The contribution examines the founding events of the Chapel of the Treasure of San Gennaro and explores the profiles of ius canonicum speciali that characterize its nature as a sui generis institution.