Where does “aarnio” come from?

aarnio (Finnish) comes from Finnish Aarni, from Finnish Aarne, from Swedish Arne, from Old Norse Árni, from Old Norse ǫrn, from Proto-Germanic arô, from Proto-Indo-European er- — eagle, bird; loose, light, rare, sparse; to fail,...

aarnio (Finnish): Synonym of aarnihauta; Synonym of aarreaitta;...