No, it is Elendil- I made a mistake with the letters from doing this in a hurry!
And #2 is indeed Umbar: rhumba - H (for hydrogen). I didn't know you could write it without an H in English.
1. Slender cave amphibian is disturbed to become pallid plant.
UMBAR Agitated ballroom dance loses element for fateful landing place.
3. Reassemble and decorate cable-car to arrive at sacred mountain.
ELENDIL Loan cover for muddled tall chap.
5. Princess to wed metaphysical poet's island?
6. Spanish gold encountered in king's tower.
7. From eternal city, all roads lead confused grandmother to haven.