The work on the FWF project P 29274-G25: "Celtic divine names in the inscriptions of the Roman province of Germania Inferior. A case study on religion in the context of cultural contact and cultural transfer", has shown that a continuation of the undertaking with an extension of the area of investigation to the neighboring northern part of Upper Germania and thus an expansion of the material base is highly desirable. In the new project, the aims and questions remain basically the same, but they will certainly lead to more in-depth and also additional new findings. The following results will, in the opinion of the applicant, bring about a significant advance in the state of knowledge:

1. an up-to-date edition of all relevant inscription material, which will be made available online in the new digital format developed in project P 29274-G25.
2. a detailed overall presentation of all Celtic-language divine names in the study area, which has not existed until now and which represents an indispensable basis for all relevant investigations.
3. a control, deepening and expansion of the results obtained in the evaluation and analysis of the Celtic divine names of the province Germania Inferior.

This includes in particular the complex of questions:

• manifestations and development of cults in cultural contact zones,
• mentality-historical aspects of religion in cultural contact zones,
• social-historical aspects of religion in cultural contact zones,
• political aspects of religion in cultural contact zones,
• spread of the Celtic language after the Roman occupation.

The extension of the previous study area "Germania Inferior" to include the military zone around Mainz as well as the territories of the Treverians, Vangions, Nemetes and Tribocians is almost self-evident. On the one hand because it is spatially adjacent, but on the other hand also because of the similar - or in the Treverian area also partly different - population conditions to the previous study area. The restriction to Celtic divine names can be explained pragmatically by the fact that the proposed project is a continuation of an already started undertaking with this thematic limitation, as well as fundamentally by a necessary limitation of the work project, but above all by the fact that Celtic names of gods in Latin inscriptions represent a productive field of investigation for the question of religion in cultural contact zones. The proposed project is closely linked to the international research network F.E.R.C.AN., whose aim is to compile and analyse all Celtic-language names of gods on Roman inscriptions.