The Imperial Library

King Orgnum is the king of island kingdom of Pyandonea. A passage from Pocket Guide to the Empire tells us:

"Far to the south of the Summerset Isles is the island kingdom of Pyandonea, home to the Maormer, a rare breed of tropical elf. It is covered mostly in dense rain forest, and is a playground for the southern water spirits. The Maormer almost never travel to Tamriel or visit their cousins at Summerset, for they were exiled from the latter kingdom in ancient times. They are known to possess a strange, chameleon-like skin, an involuntary process that is similar to the forest-coupling skills of the Bosmer. They also practice a powerful form of snake magic. With this, they have tamed the sea serpents of their island for use as steeds and warbeasts. The Maormer ruler is King Orgnum, a deathless wizard who is said to be the Serpent God of the Satakal."

In 3E 110 during the War of the Isle, King Orgnum of Pyandonea launched an attack on the Empire of Tamriel, a result of the political intrigue of Queen Potema of Solitude. However, the Pyandonean Armada was utterly destroyed by a storm that had appeared suddenly off the Isle of Artaeum.

King Orgnum's Coffer was one of the artifacts that the hero of Arena (the Eternal Champion) able to procured. It is also stated that after the War of the Isle, King Orgnum and the Maormer, was never be able to build another magnificent fleet to attack Summersets and Tamriel. Was this caused by the losing of his coffer? Nobody can tell.