Ỻonion, Ỻonyon, [504]–6, [508].

Ỻonnio, [505]: see Ỻonion.

Ỻonwen, [503]: see Ỻonion.

ỻowethir, 51.

ỻuarth, 225.

Ỻuđ, 196, [435], [447], [448], [507], [547], [674], [675].

ỻwch = loch, 23.

Ỻwch is Awel, [515].

— Ewin, [515], [530], [537].

— Tawe, Tawi, [515], [536], [537].