Do three checks before you decide.
Google check: search the name literally and with 'event' added. If that already returns hundreds of hits from other events, you run a risk of confusion.
Domain check: see whether the .nl or .com is available if you want an event site.
Trademark register check: search the name in the Benelux trademark register (BOIP) and the EU register (EUIPO) if you seriously want to scale it up.
Within an internal company context you can often use the same name as another event. For external communications it can become a legal risk. Check this early in the process, not only after the save-the-date.