No... here's a bit more:

My epitaph was carved in stone,
but soon to only one was known.

Aslan?

Nope. Hint: This character was only mentioned in 1 book.

The Giant King?

Which one?

The dead one. 😛

Then yes. 😀

😀

Let's see....

Two heads are better than one,
especially considering some of my kind,
but still did little Olvin defeat me
and in stone did he me bind.
Who am I?

Pire?

Correct!

Oops, my turn.

I hate dragons,
I traveled to isolated islands.
Who am I?

That could be several people.... Eustace or King... Gale was it? (the king that saved the Lone Islands from a dragon)

King Gale is correct. 😀

Ha, sweet! 😀

In the book, I'm younger;
in the movie, I'm older.
I'm a friend of the king
who sailed the world over
and in his greatest sorrows
wept on my shoulder.
Who am I?

Are you Drinian?