• Eurasia
  • Proto-Celtic → Welsh
    • *arbīno- → erfin
  • Proto-Celtic → Old Breton
    • *arbīno- → erbin
  • Proto-Celtic → Cornish
    • *arbīno- → ervyn
  • Stub proto-form → Proto-Celtic
    • *rab-īno- → *arbīno-
  • Middle Breton → Breton
    • irvinenn → irvinenn
    • irvinenn → irvin
  • Old Breton → Middle Breton
    • erbin → irvinenn