I will answer your questions in order: 1) all of the EU leaders bar UK and Hungary. 2) He was the PM for Luxembourg for 19 years. I imagine a fair few people have heard of him as it's a profile position.
Jesus. However you dress it up, however much straw clutching you do, he was made to look very very naive and stupid. Has it occurred to you the EU might have "allowed" this vote to ram home the point that this guy is popular and wanted by virtually everyone?
Quite an inept performance from Cameron. If he wanted a different leader then he should have gone out there and formed the alliances and friendships which would have delivered his man. Having one single person out of 26 side with you is pretty damning.