Thanks for the chest information Eugene??! Of course you are correct to look in the drops from the chests, as some armours and weapons dropped from these chests, while others were mob and boss drops.
This has helped a lot to place things into seasons:

SEASON ONE - Brackenridge and Ydra forest
Regular chests:
Ironbound Armour
Dreadnaut Plate
Ogresoul Plate
Agile Beserker
Mighty Beserker
Warden


SEASON TWO - The Dead City
Banded chests:
Battleharness
Demonlord Plate


SEASON THREE - The Kraken Isles
Pirate chests:
Seasurge
Sealord
Ullers Mythics
Blackbeards Nefarious Hooks


SEASON FOUR - The Battle for Nordr
Warchest chests:
Maul of Ollerus
Champions Chain
Weaved Chain
Snow Drift
Reinforced



SEASON FIVE - Shyual, The Shadow Plains
Puzzlebox chests:
Ker-Shual Sceptre
Shade Armour
Mystic Knight
Champion

SEASON SIX - Tindrin, The Dragons Enclave
Dragonscale chests:
Arcane Shard
Dragonscale Plate

SEASON SEVEN - The Planar Tombs
Planar chests:
Dark Crystal Plate


SEASON EIGHT - The Rage of Ren Gol
Rengol chests:
Arcane Shard
Forager's Chain
Dragon Hunter

SEASON NINE - The Curse of the Cryostar
Cryostar chest:
Arcane Fossil
Dragon Hunter Sword
Glintforged
Entromancer
Beetleborn
Insecticide
Antignome

Now i can shuffle things around more closely into the correct season. Also by looking at the timeline history i should be able to place the armours a little closer to their chronological order ... as the style of the armour reflects the time of year or event ... winter armours in tarloks winter event for instance etc etc etc.
Also just managed to purchase a Founders Glorious Plate and helm, and a few other pieces, so i can artwork those up and fill in the gaps shortly ...