There is something in common linked to each of these clues. If I give you a straight list you'll have it in an instant. Even so...
My info is according to tLotR only.
- one of the Three
- the guards of the Court of the Fountain
- Speak, friend and enter.
- The days now are short. Either our hope cometh, or all hopes end. Therefore I send thee what I have made for thee.
- 'In his time the City was made more fair than it had ever been, even in the days of its first glory; and it was filled with trees and with fountains, and its gates ...'
- 'Here's a pretty hobbit-skin to wrap an elven-princeling in.'