The aim of this paper is to present the preliminary results of my research on the Vulgar Latin in the Lusitania province. The research is being conducted within the framework of the computational project LLDB and concerns the regional diversification of Latin. By providing support graphics, this software allows the visualisation of data according to the different linguistic levels as well as their statistical distribution in diachronic perspective.
This paper focuses on the uses and forms of the relative pronouns as evidenced from the Latin epigraphy in Lusitania. Inscriptions are considered from the 1st to the 8th century AD, with special attention being paid to the future developments in the Portuguese language. To this purpose, other in- scriptions or documents of a different nature dated to later chronologies are also considered as a point of comparison.