I've done 42 of the 50 clues but now stumped. All answers are a Forename.
1) Snakes (7 letters)
2) Thought to be mostly rainy (5 letters)
3) There were 18 of these (5 letters)
4) Ours lost his head ( 7 )
5) Down under diamonds (8)
6) Third Guardian angel (4)
7) Find with a why (6)
8) A falling queen (8).