This paper studies historical sources combined with archaeological data on traces
of early Christianity in the middle section of the Roman Danubian Limes. Thanks
to the results of archaeological researches and accidental findings, a picture was obtained,
although still insufficiently clear, on the development of Christianity in this
area in the period from the 4th up until the end of the 6th century. Historical sources
note the existence of an organized Christian community at the Limes in the end of
the 3rd and the beginning of the 4th century. The oldest archaeological traces come
from the mid–4th century and they are mostly linked to the findings of painted tombs
or stone and lead sarcophagi with distinct Christian symbolism. In large urban centres,
Singidunum and Viminacium, parts of buildings which can be possibly defined
as churches were discovered, from the 4th–5th century. Most of the ecclesiastic buildings
discovered along the Limes belong to the period of the 6th century. They were
built within military encampments and they bear witness of the high degree of Christianization
not only of military crews but also the civilian population which lived in
those fortifications and their immediate vicinity