Never shall we die....!

Question

Here now the accounts of the nine pirate lords
And one impostor amidst them all

Here now their voice and story
And which impostor to die

The first of all is the chief of all
Hidden by the songs of death

The second lord brought with him a dove
And the largest army of the bunch

The third of such is the most known of such
Named by a foreigner to the original one

The fourth lord is cruel and lost
And dragged the Titan down to the abyss

The fifth pirate is known as Helen, aged yet classy
Some may call her Tethys, others, a hybrid

The sixth one birthed the iron with a feet of clay,
Known by the Greeks as horse of superiority

The seventh pirate's a distant relative to Heracles
Though in possession by the Roman army

The eighth pirate reigns up not down
Don't let its waters deceive its name

The ninth lord reigns down not up
The waters describe its name

The tenth pirate may have met with Moses
Columbus looked for him but found the third instead

Answer me, yet truthfully
Which pirate is to be dead?

Also a free, bonus -0 points to whoever figures out what the title is referencing

Pirate name not needed, just their number. Also tell me the EXACT name of the sea, that's the more important part

Clue:

Pirate one is the traitor, but why?

Clue #2:

Homer and sirens, what's that all about?

Clue #3:

What's a prominent sea surrounding Greece?

Answer 1

Ah, the first sea, and the imposter is,

The Aegean Sea

as it was referenced as the Archipelago which in ancient Greek indeed meant Chief Sea. Today we use the term archipelago to reference a set of islands and not the sea around them.

Hidden by songs of death refer to Odysseus sailing in these waters with clever preparation to not be seduced by the sirens and their songs.

Answer 2

Partial

The nine pirate lords

appear in Pirates of the Caribbean: At World's End. The pirates and the seas they control are listed in the POTC wiki.

The first of all is the chief of all
Hidden by the songs of death

A song of death is a swan song. This could refer to Swansea, which is not a sea at all so the impostor would be the first pirate lord. Not sure what "chief" would mean in this case, though...

The second lord brought with him a dove
And the largest army of the bunch

A dove is a symbol of peace, and the Pacific Ocean is the largest of all seas. Also, the Pacific is home to North Korea which has the largest navy in the world by number of ships.

The third of such is the most known of such
Named by a foreigner to the original one

From #10 we know this is what Columbus found, so Caribbean Sea. I suppose the name was given by Europeans, although the word originates from "Carib" which was the name a Caribbean native people called themselves.

The fourth lord is cruel and lost
And dragged the Titan down to the abyss

This is the Atlantic Ocean. The Cruel Sea is a book about the Battle of the Atlantic, Atlantis was a lost city, and the Atlantic is the place where the Titanic sank (thanks @dcfyj!).

The fifth pirate is known as Helen, aged yet classy
Some may call her Tethys, others, a hybrid

?

The sixth one birthed the iron with a feet of clay,
Known by the Greeks as horse of superiority

?

The seventh pirate's a distant relative to Heracles
Though in possession by the Roman army

?

The eighth pirate reigns up not down
Don't let it's waters deceive it's name

?

The ninth lord reigns down not up
The waters describe it's name

?

The tenth pirate may have met with Moses
Columbus looked for him but found the third instead

Annosz figured out that this is the Indian Ocean. Columbus was looking for India, and Moses parted the Red Sea which is a marginal sea of the Indian Ocean.

Answer 3

Here now the accounts of the nine pirate lords  
And one impostor amidst them all

Here now their voice and story  
And which impostor to die

The first of all is the chief of all  
Hidden by the songs of death

Not really sure about that one but I think it is Oceanus, the river encircling the world, the father of everything and the limit between the habitable world and the underworld.

The second lord brought with him a dove  
And the largest army of the bunch

Pacific Ocean found by @Annosz and @jafe The dove is the symbol of peace => pacific and the Pacific Ocean is the biggest one

The third of such is the most known of such  
Named by a foreigner to the original one

Carribean Sea found by @Annosz and @jafe
Was named by europeans and is the most know because of the Pirates of the Carribean.

The fourth lord is cruel and lost  
And dragged the Titan down to the abyss

The Atlantic Ocean is the host of the bermudas triangle where so many ships has been lost to the sudent tempests. It is also the ocean that engulfed Atlantide, who was named by the greeks after the titan Atlas. But @Annosz said that also but that wasn't a good answer. Sadly, it was the last one I didn't placed anywhere

The fifth pirate is known as Helen, aged yet classy  
Some may call her Tethys, others, a hybrid

The Caspian Sea is a remnant of the Tethys sea but I can't find a link with Helen

The sixth one birthed the iron with a feet of clay,  
Known by the Greeks as horse of superiority

The Adriatic Sea was also named Mare Superior in the antiquity, the mare is the female of the horse. It's also adjacent to Yugoslavia who was the hole (feet of clay) of the Iron curtain since it was in the Non-Aligned movement.

The seventh pirate's a distant relative to Heracles  
Though in possession by the Roman army

The Pillars of Hercules/Heracles are at the entrance of the Mediterranean Sea and the roman empire named it "Mare Nostrum" who translate as "Our Sea"

The eighth pirate reigns up not down  
Don't let it's waters deceive it's name

The Black Sea has been named by the greeks by the system where color replace cardinal points, black or dark for north, and not because the water is black.

The ninth lord reigns down not up  
The waters describe it's name

The South China Sea is situated, well, south of China. It's also named the Eastern sea by the vietnamese as it's the sea east of Vietnam, and named the West Philippines Sea by the Philippines, because it's west of the Philippines...

The tenth pirate may have met with Moses  
Columbus looked for him but found the third instead

Indian ocean found by @Annosz Columbus searched India but found the carribeans instead and the red sea is parth of the indian ocean.

Answer me, yet truthfully  
Which pirate is to be dead?

The first pirate, as lord of Oceanus, an ocean that doesn't exist, is the impostor and should be condamned to death

Answer 4

The answer is

Pirate Number 5

Explanation:

The first of all is the chief of all 
Hidden by the songs of death

The first pirate represents Elizabeth Swann, because she can hear the songs of the pirate since childhood. She was also elected as the Pirate King

The second lord brought with him a dove
And the largest army of the bunch

The second pirate represents Ching, because she has the largest pirate army of the seven seas!

The third of such is the most known of such
Named by a foreigner to the original one

The third pirate represents Jocard, who was brought in as a slave, but later rose to become a Pirate Lord after killing his master and taking his name

The fourth lord is cruel and lost
And dragged the Titan down to the abyss

I think this is Hector Barbossa if we're following the movies series

The fifth pirate is known as Helen, aged yet classy
Some may call her Tethys, others, a hybrid

This is the imposter amongst them. Just doesn't fit with the Pirates of the Caribbean story

The sixth one birthed the iron with a feet of clay,
Known by the Greeks as horse of superiority

I think this is Jack Sparrow because of the feet of clay reference, but he is sneaky like a Trojan horse

The seventh pirate's a distant relative to Heracles
Though in possession by the Roman army

This may be Captaine Chevalle, since he was captured by army.

The eighth pirate reigns up not down
Don't let it's waters deceive it's name

This may be Ammand, who reigns the Black Seas, but he is not black.

The ninth lord reigns down not up
The waters describe it's name

Definitely sounds like Sumbhajee Angria - King of the Indian Ocean and the water describes his name

The tenth pirate may have met with Moses
Columbus looked for him but found the third instead

This may references to Eduardo Villanueva, because he is a pirate of the Italian Seas and Spain!

Answer 5

Many sea names were mentioned before, and @jafe even pointed to

the Wiki page of the Pirates of the Caribbean: At World's End, where the 9 seas are listed.

What is different in my solution is that I think

We need to match these exact seas to the riddle, and find the one that is left - the traitor.

The first of all is the chief of all
Hidden by the songs of death

I think this most obviously refers to the Black sea, as black is the color of death.

The second lord brought with him a dove
And the largest army of the bunch

The dove is the symbol of peace, wich aligns well with the Pacific Ocean. Also, it is the largest sea. (Also found by @jafe)

The third of such is the most known of such
Named by a foreigner to the original one

The tenth pirate hint that this is the sea which was found by Columbus - the Caribbean Sea. It is also the most well-known, because of the movies. (Also found by @jafe)

The fourth lord is cruel and lost
And dragged the Titan down to the abyss

The titan Atlas shares the name with Atlantis, the lost city, which dissapeared in the Atlantic Ocean (what a coincidence - also the same name). (Also found by @jafe)

The fifth pirate is known as Helen, aged yet classy
Some may call her Tethys, others, a hybrid

The Tethys Ocean is the ancestor of the Mediterranean Sea, which i think is the most classiest of the seas. Also, the presence of Greace could explain the Helen reference.

The sixth one birthed the iron with a feet of clay,
Known by the Greeks as horse of superiority

I have to admit, this was the one I had as a leftover from the nine seas - the Caspian Sea. The ironworking originated from this are, and the Trojan horse's breed may be Caspian horse.

The seventh pirate's a distant relative to Heracles
Though in possession by the Roman army

The Adriatic Sea, was ruled by the Romans, and it is very close to Greece and the Mediterranean Sea, which can explain the Heracles reference. (Also found by @jafe)

The eighth pirate reigns up not down
Don't let it's waters deceive it's name

This will mean the South China Sea, which has South in his name, but is actually on the Northern Hemisphere.

The ninth lord reigns down not up
The waters describe it's name

I think he is the traitor - the Dead Sea, which is not on the list of the nine seas. He reigns down, in the empire of death, and clearly goes very literally with the last question: "Which pirate is to be dead?"

The tenth pirate may have met with Moses
Columbus looked for him but found the third instead

Moses parted the Red Sea, which is part of the Indian Ocean. It is also clear that Columbus originally looked for a way to India.

Summing that up:

The traitor is the ninth lord, the lord of the Dead Sea - he shall be dead.