Althyn was a westronisation of the new rhovanian title Allthegn or Alladegen (Rh."Allthane" from old Rh."Allathegna").Among the Woodmen the title referred to the highest ranking Chieftain or Thane.

Boromir: "Is it not a strange fate that we should suffer so much fear and doubt for so small a thing? So small a thing!"
- J. R. R. Tolkien, The Fellowship of the Ring II:10
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