• Origin: Welsh
  • Meaning: “bird.”
  • Gender: feminine
  • Pronunciation: ah-DEH-rin

The name comes directly from the Welsh word for bird. It was first recorded as a female given-name in 1900 when Welsh revivalism came to the fore.

It is most notably the name of a large hill in Wales known as Craig yr Aderyn (bird rock) in Snowdownia national park, where birds are known to nest. It is also the name of several Welsh literary works.

An offshoot is Deryn.