A Salute to Poetry

Question

In honor of National Poetry Day (which happens to be March 21st - go figure), I have crafted a puzzle which I hope will do a small bit of justice to this day.

Carefully hidden in the four sections below (which may or may not be related) are the names of five of my favorite poets (admittedly, I have more than five). Some of the verse quoted below comes from well-known poets - but note that any author whose work appears in this puzzle is not one of the final five poets.

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Section I

We should have a land of sun,

Of gorgeous sun,

And a land of fragrant water

But limped on, blood-shod. All went lame; all blind;

Drunk with fatigue; deaf even to the hoots 5

Of tired, outstripped Five-Nines that dropped behind.

Wast present, and, with mighty wings outspread,

Dove-like sat'st brooding on the vast Abyss,

And mad'st it pregnant: what in me is dark

Pouring as wide a flood 10

As when my brothers long ago,

Came with me to the wood.

As traceless as a thaw of bygone snow;

It seemed to mean so little, meant so much;

If only now I could recall that touch. 15

Section II

15.6.2--4.2.3--10.1.5--1.5.1--7.5.6--0.0.0--8.1.1--15.4.1--15.8.4--5.1.5--5.3.4--2.3.3--11.1.2--10.5.3--14.4.4

Section III

Ole pal Grenada

Section IV

My prefix is shiny and precious.

My infix is archaically long ago.

My suffix contains German beer.

I heard of something ending once,

So I wrote about it, of course!

Hints

Hint 1:

Some pretty big hints were here the whole time. I bet you never even saw them. Literally did not see them. Hmmm...

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Again, the final answer is the names of five prominent poets. A complete answer is required for the checkmark (although partials are fine, as long as they are significant).

Answer 1

Section I

Lines 1-3:

"Our Land" by Langston Hughes.

Lines 4-6:

"Dulce et Decorum Est" by Wilfred Owen.

Lines 7-9:

"Paradise Lost" by John Milton.

Lines 10-12:

"Dirge" by Ralph Waldo Emerson.

Lines 13-15:

"The First Day" by Christina Rossetti.

So one of your favourite poets is

HOMER (the last names of these five form an acronym H, O, M, E, R).

Section II

Taking each three-number code $m.n.p$ to mean

the $p$th letter of the $n$th word of the $m$th line in the section above,

another of your favourite poets is

EMILY DICKINSON.

Section III

Another of your favourite poets is

EDGAR ALLAN POE, an anagram (I noticed the anagram tag!) of the letters "Ole pal Grenada".

Thanks @Deusovi for help with this!

Section IV

Thanks to @OmegaKrypton for all but the suffix here.

My prefix is shiny and precious.

SILVER.

My infix is archaically long ago.

ERST.

My suffix contains German beer.

STEIN.

I heard of something ending once,
So I wrote about it, of course!

Apparently Shel Siverstein is famous for a poem entitled "Where the [Pavement] Ends".

Miscellaneous

Following Hint 1, we should

check the hidden text in the HTML markdown of the question. In Section I we should apparently look for "certain digits of a certain day" (the National Poetry Day mentioned in the intro) - as found by Bananenkopp in their answer this gives ROBERT FROST. Finally, as an extra bonus, there's a bit near the end which makes E. E. CUMMINGS (clued by lower-case writing style) the bonus sixth poet.

Summary

Five of your favourite poets are Homer, Emily Dickinson, Edgar Allan Poe, Shel Siverstein, and Robert Frost, with the extra bonus sixth of E. E. Cummings.

Answer 2

Section IV

SILVERSTEIN

My prefix is shiny and precious.

SILVER

My infix is archaically long ago.

ERST?

My suffix contains German beer.

STEIN. (thanks @Randal'Thor!)

I heard of something ending once,

So I wrote about it, of course!

Answer 3

Section I, the fifth Poet

As mentioned by Brandon_J in the comments, March 21 means "take the second letter of something". Well, take it from the bold lines of section I:

Of gorgeous sun,
Drunk with fatigue; deaf even to the hoots
Dove-like sat'st brooding on the vast Abyss,
As when my brothers long ago,
It seemed to mean so little, meant so much;


And now its getting cold: Its Robert Lee FROST