Words and Proper Names

Yell

5447.
Coates (Richard): Yell.
In JSNS 1 (2007), pp. 1–12.

Ynys y Kedeirn/Kedyrn (W)

1219.
Mac Cana (Proinsias): Varia: III. 1. Insula Fortium: Ynys y Kedeirn/Kedyrn.
In Ériu 48 (1997), pp. 273–274.
On the possible connection between W Ynys y Kedeirn/Kedyrn in the story of Branwen uerch Lyr and Lat Insula Fortium in the Navigatio Brendani.