1.
R OMENDACIL - Element of stone: 8 + 19 = 649 (with extra A)
2.
E ARENDUR - Element of discord: Cob + final + not my = last of 10.
3.
G - Element of green: Not B = cog + +/-
4.
N AIN - Element of fire: Salt (not green) + spot (not out) = 1, and also 1
5.
A - Element of water: First title + first name = first blasphemy.
6.
L ENWE - Element of wood: Borrow I... - 500 = father of the namesake of the last before the king
Na + the spot(=location) which is not out (ie, 'in'). The Nain I'm thinking of was the first of his name in Durin's line... and reigned for only a single year, before being killed by a balrog. 1, and also 1, and also fire.
(He would have been stone, but Gondor already stole that.)
hS