Budini: Most Likely of Proto-Slavic Identity
Although the Budini left no written records of their own, their name itself offers useful linguistic evidence. The root bu- appears more frequently in Slavic languages than in Baltic ones (compare, for example, budem “will be” and budit “to awaken”). A later Slavic tribe inhabiting roughly the same region, the Buzhans bore a closely related name and may have been near or even direct successors of the Budini.
Conclusion: The linguistic parallels suggest that the Buzhans could have been descendants of the Budini, supporting a Proto-Slavic rather than a Baltic or Uralic origin for the Budini.