src/third_party/icu/source/data/lang/gv.txt

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Generated using tools/cldr/cldr-to-icu/build-icu-data.xml
gv{
    Languages{
        gv{"Gaelg"}
    }
}