I have been a fan of this song ever since I heard Mary Jane Lammond sing it on her CD Orain Gaidhlig.
Here are her lyrics

http://www.celticlyricscorner.net/lamond/cead.htm

Here is only a partial-lyric translation i've found...

http://www.leabharmor.net/index.php/leabharmor/029/

Could anybody help in translating the rest please?