The paper investigates the relationship between funerary epigraphy, burial space, and the liturgy for the dead in late antique Christianity, proposing a methodologically controlled reading of the tomb as a possible indirect liturgical source. Christian burial is not treated as automatic evidence of a structured celebratory practice, but rather as a complex document in which family memory, eschatological hope, prayer for the deceased, communal commemoration, and, only in certain cases, properly liturgical relevance may converge. Through the comparison of epigraphic formulas, cemetery topography, burials near martyrs, the cult of saints, and liturgical formularies, the article proposes a critical framework for distinguishing different degrees of ritual evidence. The Roman and suburban context is taken as a privileged documentary laboratory, owing to the exceptional density of its epigraphic, archaeological, and literary evidence; the conclusion also recalls selected comparative perspectives from southern Italy, particularly Cimitile‑Nola and Naples. The resulting picture shows that the Christian formalization of the memory of the dead did not proceed by the immediate replacement of earlier funerary customs, but rather through a gradual ecclesial reworking of the relationship among the living, the dead, the saints, and sacred space.