1.
SAURON Finnish invention replaced article with conjunction, tangled lord.
2.
ESIWMAS Hobbit's reflection confuses action and location of fish.
3.
ANNATAR Rodent jumped back after girl beguiled Elves.
4. Small big boy girl puzzled king.
5.
BILBO I replaced you in plant part before exclamation was heard by hobbit.
6.
DEAGOL Leave in the middle of a bargain? Don't want to share assets.
7.
ALATARIEL Science fiction princess lies back on top of sacrificial table for a crowned maiden.
8. One of stone folk stumbles over nomad wizard.
9. Revive muddled point, get near-palindrome.
10. Dazed, cropped element joins thankless star for smith.
Samwise is the weird clue. Before writing the clues, I made a list of all - or almost all - possible names that could fit thematically, and out of all of them not a single one had the right letter in the right position. Hence I had to invert Samwise.
You're using the right logic for stone folk, but you haven't found the right folk yet.
