The Kelts at one time invaded many parts of Europe. They invaded
Spain; this is the origin of Spanish Galicia. They invaded Poland; this
is the origin of Polish Galicia. They invaded Turkey; this was the
origin of Galatians (one of the books of the Bibloe) and Gallipoli.
Kelts also invaded Italy and Greece. The Kelts didn't originate in
Ireland. They originated in central Europe. Both Baveria and Bohemia
were named after a Keltic tribe, the Boii.
http://www.delphi.com/nordichistory1