Answers:

1. Aragorn, because he would claim the kingship if he came. p14
2. Halbarad, Elladan, Elrohir(p42)
3. Dernhelm(p81), Eowyn (p129)
4. Sing (p83)
5. A troll-chief (p197)
6. Clean water and plain daylight (p229)
7. He was to go with Faramir to Ithilien (p297-298)
8. Robin Smallburrow (p339)
9. 15 miles to Waymeet (p150); 14 miles to the Great Smials (p149)
10. September 21 (p373)