I think that should be "first commercial orbital launch attempt from continental Europe".
Commercial is required to exclude launches from the Plesetsk Cosmodrome, orbital is required to exclude the Miura 1 attempt, Europe is required for obvious reasons & continental is required to exclude the LauncherOne attempt, and attempt is required for obvious reasons.
& continental is required to exclude the LauncherOne attempt
Also to exclude a few hundred launches from French Guiana, which is politically part of France and the EU (but certainly not geographically in Europe).
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I think that should be "first commercial orbital launch attempt from continental Europe".
Commercial is required to exclude launches from the Plesetsk Cosmodrome, orbital is required to exclude the Miura 1 attempt, Europe is required for obvious reasons & continental is required to exclude the LauncherOne attempt, and attempt is required for obvious reasons.
Also to exclude a few hundred launches from French Guiana, which is politically part of France and the EU (but certainly not geographically in Europe).
If you want to get technical, Andoya is an island separated from continental Europe...