I'd like to point out that the code for the language called here "Gaelic (Ireland)" is incorrect. It should be ga, not gd-ie. And the appropriate English name for the language is "Irish", not "Gaelic (Ireland)".

Gaelic is a language spoken in the Highlands of Scotland. Its IANA code is gd, as it correctly appears here.

Irish is a language spoken in some parts of Ireland, it is related to Gaelic but it isn't a variant of it, it is a separate language and its IANA code is ga.

More information: http://en.wikipedia.org/wiki/Irish_language