Toponymy, Linguistic Contact, and Historical Inference: Evidence of a Pre-Official Jesuit Presence in Southern Brazil

This study analyzes the occurrence of a toponym derived from the Portuguese term *encruzilhada* (crossroads) in an indigenous context in southern Brazil, where historiographical records indicate an absence of European presence in early periods. Variations such as *incruzilhada* and *incrozilhada*, documented in local historiography, suggest processes of phonological adaptation, and not an autonomous lexical origin, constituting linguistic fossils of cultural contact prior to official records. Using a multidisciplinary approach that articulates toponymy, historical linguistics, and regional context, it is argued that such evidence constitutes a consistent indication of cultural contact prior to official records. Although not conclusive, the persistence and transformation of the term point to the circulation of European concepts among indigenous populations at a time prior to that recognized by traditional historiography. The results support the hypothesis of a Jesuit missionary presence in the region, not yet fully documented.