Well, with the first of these image modifications, I run across the problem of copyright again. I will settle for just saying that the image of Frodo is from a Lord of the Rings movie poster, the text is mine. The second image and text are all mine. If you prefer poetry straight, the sonnets by themselves are printed below. Melkor is the angelic spirit that rebelled against Iluvatar, of whom Sauron is only a servant.
The first poem is an imagined part of the conversation that Bilbo had with Frodo as he gave him the sword Sting and the mithril coat in Rivendell, when he also famously, and rather startlingly in the movie, flipped out.
The second poem is an imagined conversation between Galadriel and Frodo as they meet to go to the Grey Havens in the newly redeemed shire at the end of the Return of the King.
 
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My dear Frodo, I did not ever dream
To be my heir would mean so dark a road.
But adventures are never as they seem
In tales, wholly self-chosen. The load
Unsought is given, then sealed in our choosing.
But with the load the Unseen Giver also gives
Graces and Beauty to soothe the losing
Of homely things. So take now as you leave
Fair Mithril for without, and for within
Fair memories of sunlit days and friends,
Of glorious Elder Days, of Elves and Men
In darkness fighting for a brighter End.
Despair not. Whisper with your final breath,
If Night falls, Gilthoniel, A! Elbereth!
F R O D O
Dear Elf-friend we meet well under these trees
That bloom in part because of sorrow borne
By you and of the love and toil of he
Who, tender, bore you up, who soon will mourn
That you cannot savor the fruits of joy
Which bloom in field and hearth since Elven-home
Has stretched to bless the Shire. For pain alloys
Each joy you feel vicariously alone.
But know your pain has brought you close to me.
You feel the holy ache we feel who knew
Undying Light beyond the Sundering Seas.
You will be healed. The root of Melkor’s fall
Will die and Iluvatar be All in All.