What artists should I look out for in the Louvre for Leaving Cert art history?

I'm heading to Paris and I'm planning on going to the Louvre. I'm a Leaving Cert art student and I would like to know what paintings or artists should I look out for that may come up on my exam next year? We haven't got to European art yet (stupid Irish art, ugh! ><) so I don't know what to look out for! I'm going on the trip to improve my french for the LC so I may as well help my art history knowledge out while I'm at it!