The Fennas word for fence is fales. Fales is an uncommon last name. Fales Library at NYU. Fales Hot Springs is a place in California near the Nevada border.
How did I come up with this word? The Welsh word for fence is ffens, the Irish word for fence is fál, and the Cornish word for fence is kloos. I'm not entirely confidant the of the Breton translation, since I need to translate words from English to French, then French to Breton.