I’ve never heard it, but the thirds often end with nicknames like Trip (as in triple) or Tres (south Texas / 3 in Spanish) or if your in south Louisiana the the

I’ve never heard it, but the thirds often end with nicknames like Trip (as in triple) or Tres (south Texas / 3 in Spanish) or if your in south Louisiana the the prefix of petit (little, eg Jean and petit Jean) is appended to the junior vs the senior