Okay, I've jumped off the deep end into this one! I have a tentative timeline and I will post a very abbreviated version below for comment.
First let me say that I couldn't even have attempted this without Ripvanwormers work - that really laid out the problems and possibilities and I'm absolutely riffing off of his excellent posts.
To make this work and fit with the Oerth Journal article, I've assumed that the Egg of Coot was finally successful with a fifth invasion - after invoking a huge seismic upheaval that resulted in the radical differences between the Greyhawk and Blackmoor maps. (I have made maps overlaying one with the other - posted on my blog
https://boggswood.blogspot.com/2019/09/m...kmoor.html )
This means that all of known Blackmoor history has to be in the past of present day Greyhawk.
I think there are only two dates in common to deal with - the founding of the Great Kingdom, and Robilar's Journey to the city of the Gods.
The great Kingdom date can be taken as somewhat legendary. Curiously it is given as the date Blackmoor is conquered by Robert I, and it seems odd that Blackmoor should be conquered right at the same time the great kingdom is founded.
For Robilar there is no date, except to say that Robiar is alive in the latter half of the 500's of Greyhawk, but at the time of his journey to Blackmoor, Fant is said to be the Baron of Blackmoor. If that is the Baron Fant - then Uther would still be alive and well at the "current" time of Greyhawk (circa 600), and that is completely irreconcilable with Greyhawk lore. Unless either it is a different Baron Fant, or Fant, as in the Vampire Sir Fang has once again gained control.
So those where the main issues I was dealing with. On my blog
https://boggswood.blogspot.com/2019/09/b...ecord.html
I talk about how I reconciled the problem.
The KEY is to assume that the Oeridian Record dating system of Greyhawk is one and the same with the standard Blackmoor dates.
The timeline I have is huge - but I'll post a few of the highlights here:
–644 CY:Year Zero of the Oeridian Record - the traditional Blackmoor Calendar. Early settlers begin to clear the land and establish hamlets and farms utilizing hay based agriculture. In addition to sheep, they begin to domesticate the large wild bison (grazers) that constitute one of the most common native animals in the area. The domesticated bison soon become the dominant farm animal in the Northern Marches.
Tales abound among Blackmoorians of a legendary hero, King Robert the First of Genyva, supposedly a great warlord and monarch who conquers and rules over the natives of Blackmoor at this time. Historians are divided regarding the actual existence of this character, but it is supposed he was an Oeridian warlord active in the formation of the Oeridian Confederation.
-422 CY: Suloise Mages of Power call down the Invoked Devastation upon the Baklunish. In retaliation, Baklunish spellcasters bring down the Rain of Colorless Fire upon the Suloise Imperium, transforming the empire in the Sea of Dust.
Surviving Baklunish migrate north to the shores of the Drawmidj Ocean.
-420 CY: Following the Great Reign of Fire, Pygmalion, a semi-legendary religious leader known for her beauty and sensuality, founds a cult whose theology is literally make love, not war. Her religion flourishes but is short lived however, as rivalries among her followers lead to her being kidnapped by a Jinn who is said to have lusted after her. There are those who claim Pygmalion was thereafter enchanted into an eternal slumber, others who say she escaped her captor and wanders the world in secret, bringing peace where she can but forever chased by her obsessed kidnapper.
Pygmalion and her cult are believed to have originated in the Pinnacles of Azor'alq where her central temple was said to be located along with the remnants of her priesthood.
-216 CY: Foundation of the Kingdom of Aerdy.
175 – 195 CY: Mage Wars – “Hot period”. Within a few years of arrival, the Magic Users begin to consolidate political power in the Northern Marches and fight each other. Weakened is continuous and devastates the country. Within the first 5 years, 4 major factions emerge. Much of the population decimated or flees to safer regions.
352 CY: (1972) - 2nd Coot invasion.
Blackmoor Castle besieged. Captain Krey, given the choice of death or treason, chooses treason, opens the door to the dungeon allowing the enemy to flood into the castle from below. The castle is attacked and conquered by King Funk I of the Black Hand tribe of the Black Hills. The remaining Wizards Cabal is defeated and scattered. The traitors split the loot and head north to the land of Coot.
Gertie the Dragon killed defending Blackmoor town. She is later resurrected in gratitude.
Svenson's Freehold destroyed.
Svenson and other Heroes are “exiled” to Lake Gloomy and lands south for failing to protect the town and castle during the Coot invasion.
Coot forces under the turncoat Captain Krey attack Lake Gloomy. Svenson killed defending southwest gate. He is later resurrected.
Baron Jenkins disappears while exploring the swamp.
The heroes of Blackmoor successfully lift the siege of Loch Gloomen and the tide turns against The Eggs armies.
Blackmoor barons and heroes in alliance with Elves and Dwarves mop up the remaining forces of Coot.
Baron Fant returns to Bramwald, leaving Blackmoor in the hands of the elves. Shortly after returning to Bramwald, Fant is bitten by a Vampire and becomes the notorious Sir Fang. Sir Fang enters Blackmoor dungeon.
Fnord, Scotty Debelfry, and The Wizard of the Wood head south to investigate the Monks of the Swamp and rumors about the brutal practices of the frog cult in the swamp.. They disappear and are presumed dead.
Svenson's Freehold rebuilt.
Mello builds his house.
The elven prince Noetzel institutes strict measures to ensure that the plague of vampirism is contained within the dungeon.
369 CY: (1989 AD) - A Skandaharrian army invades northern Blackmoor. Bakula leads the forces of Blackmoor to victory but dies from wounds sustained in battle. Uther proclaimed Baron of Blackmoor and Duke of Vestfold.
Duke Uther’s efforts to clear Blackmoor dungeon suffer a severe reverse as undead overrun the guards stationed on level 2. The Duke orders the dungeon sealed, again.
390 CY: Uther and allies launch an all out assault on the Afridhi in Ten. Uther lays siege to Starmorgan. In the midst of the battle, an obsidian tower springs up suddenly, cloaking the entire battlefield in unnatural darkness. The Drakon’katha, a four armed serpentine race from the underdark emerge and slaughter the forces of both the Afridhi and Blackmoor.
391 - 396 CY: More and more of their obsidian towers erupt from beneath the earth up throughout the Afridhi empire shrouding the land in darkness as legions of orcs, thousands of giant worms, and all manner of underworld monsters lay waste to entire towns, villages and cities, Toska Rusa leads her forces in a desperate holy war. Within five years Toska Rusa is dead and the Afridhi are no more.
396 CY: Drakon’katha towers begin appearing in Uther's realm. In the face of this new threat, Uther grants amnesty to all members of the sorcerous organization known as the Eldritch Underground which merges with the remnants of the Wizards Cabal to form the Eldritch Cabal.
396 - 410 CY: Pax Uther. For a time, the Eldritch Cabal and the heroes of Blackmoor are able to stem the tide of Drakon’katha expansion, but skirmishes are constant.
411 CY: Obsidian towers begin to appear throughout Blackmoor. The Cabal and Uther's forces are stretched thin and overwhelmed. Desperate, Uther sends an offer of alliance to the Egg of Coot, who refuses.
Vestfold falls.
Uther learns the Drakon’katha leader, the Sorceror King Amanset, wears an amulet that telepathically controls all the giant worms in his forces.
Drakon’katha and Purple Worms emerge from the Wizards Pit in vast numbers. Aided by the Jewel of the Sun, Uther and the heroes fight their way to Amanset where in a heroic effort, Uther slays him. Taking his amulet, Uther orders the worms to eat all the Drakon’katha. Swiftly the tide turns. All over the northlands, Drakon’katha begin to flee back into the underworld, as the worms gorge themselves on Drakon’katha flesh. Few escape.
Blackmoor is victorious, but most of the heroes are dead or dying, including Uther and his chosen successor, Grand Inquisitor Col.
Various nobles vie for power.
414 CY: The Crown of Blackmoor is recovered from the depths of Blackmoor dungeon by Engrin Eris, the sorceror of Glendour. Crown in hand, Eris raises an army and captures Blackmoor. He begins to consolidate power and rebuild the kingdom, but grows increasingly cruel and oppressive.
422 CY: Rua Morgaiste the last blood heir to the Barons of Blackmoor, unifies the resistance to Eris and leads a rebellion that ends with Eris dead.
Morgaiste becomes the first ruling Archbaroness, ruling wisely for 60 prosperous years.
437- 446 CY: Civil War in the Great Kingdom. Ivid I of house Nealex becomes emperor in 446.
482 CY: Morgaiste dies without heir. A council established to decide the matter of succession chooses Fadden of Dantrefaer over a claimant sponsored by the Egg of Coot.
Fadden confirmed as Archbaron after first being named Lord Conciliator of Blackmoor Castle, but governing authority remains with the Baronial Council. The Archbaron serves as a figurehead, in return he receives a generous stipend and a voice in the Council.
500 - 540 CY: Fadden dies following a successful reign. Three more Lord Councilors are chosen in succession; Tindell Dantrefaer, Mandras Dorentir, Wargo Trecht.
540 CY: The Egg of Coot unleashes a massively overpowered Move Terrain spell on the Crystal Peaks, moving the entire broken mountain range under the seabed around Blackmoor Bay. The resulting seismic upheaval causes the land to shift and rise, dries up seas, rivers and lakes and drastically changes the geography of Blackmoor.
541 CY: Fifth Coot invasion - following on the devastation caused by the seismic upheaval, Coots armies easily sweep across the land. Blackmoor castle holds out the longest, but falls within a week. The fifth and last Lord Conciliator of Blackmoor Castle, Pernold, dies defending Blackmoor Town from the Egg of Coot’s invading army. Surviving dignitaries and heroes retreat to the Comeback Inn. The Egg is unable to breech the Inn, but neither could anyone inside escape.
542 CY: The archbaron's wife, who has escaped to Dantredun, gives birth to the archbaron's son, Bestmo. The lord of Dantredun adopts Bestmo as his heir, but passes away soon thereafter.
581 CY: Bestmo becomes ArchBaron