The Bombers are known for their team’s offensive strategies and high scoring (QA8).
Bigonville, a small town in western Luxembourg, does not have any sports teams (Quidditch or otherwise) mentioned in its Wikipedia entry (Wikipedia).
As Luxembourg is such a small country, the Bombers may possibly provide many of the players for Luxembourg's National Team.
Lexicon list of European Quidditch Teams
From the Web
WizardingWorld.com (Pottermore) features:
Harry Potter Wiki: Quidditch