The Siege of Ur lasted 12 years. During this time the city was defended by the Orders; it is from this defence they derive their claim to authority.
Ending with the start of the current age, the Godswar raged in the Aetheric Realms a thousand years ago, devastating many realms and annihilating many gods. During this time whatever the old order of Ur was was swept away and the Orders stepped up to defend the city.
In the aftermath of the Godwar the old Orders of Ur were in disarray, half their philosophies rendered false, the others split into pieces. The Divison was a period of chaos, with the streets of Ur being claimed and conquered by different factions on a year-by-year basis. Several attempts were made at rebuilding the council, leading to periods of relative stability, but none were successful until in the year 54 when the Children of Marrius tried and failed to summon their god into Ur.
The Division came to an end when the Children of Marrius tried to summon their god into Ur. No one is sure what happened for sure, but it is assumed the The Shrouded Queen intervened; whatever happened the Children of Marrius are no more and the remaining Orders were terrified enough to end hostilities.
In the aftermath of the Division the new Council of the Orders ruled the city with an iron grip.
Near the start of the Iron Rule the Knights of the Road demanded a seat at the council but were rebuffed. Violence broke out in the streets, but in the end the Knights were driven underground and started their journey to become the modern criminal organisation.
The Iron Rule led to revolution, which saw the city radically reorganised along democratic lines. It is not know if this truly was the first republic of Ur, but it was the first since the Godswar.
The inciting incident of the First Republic was the storming of Fate's End by rebel forces, breaching its walls and freeing their leader and her co-conspirators.
The Iron Rule was gone, but not forgotten. Turning the people against one another the remnants of the old Council seized power in a bloody coup.
During this era the Nest mostly occupied the space around The Maw. In an attempt to get rid of undesirables the Steel Rule Council surrounded the Nest and set it ablaze, driving the occupants into the Maw and oblivion. The attempt was only partially successful, but was the bloodiest week of the whole bloody period.
The Second Republic got control of the city back from the Steel Rule, but in attempting to learn the lessons of the past it overcorrected. Its bloody purges put anything the Steel Rule could inflict to shame, and they soon lost the support of the people. The old Orders stepped in to fill the power vacuum.
The Carnival of Blades can refer to the mass executions of the Second Republic in general, but more specifically the term was coined for the moment the new government turned their attention from the old Houses and Orders and started to prey on their own people. For a full month Postov Square was devoted to a public spectacle of the executioner's axe, targeting any who disagreed with the new regime.
For over 650 years the city of Ur has been in a state of equillibrium. The fortunes of the orders and houses ebb and flow, but none have upset the status quo.
It is unknown where the Dimensional Blight came from, but it is known that it arrived in Ur in the year 282 and ravaged the city for 19 years. The Blight used to affect everything, but the efforts of the Clock Tower allowed it to be mutated - making it less virulent and only affect the inanimate. Confined to The Nest there has been little research into wiping it out completely, The Maw will get it in the end.
A magical fire sweeps through the old Order Halls district. The Athenaeum Fraternity are suspected but never proved to be behind the arson. Residual magic from the flames continue to plague reconstruction efforts over the next few years.
Political unrest had been rising in the city due to an increasing wealth gap. In the wake of the Green Fire the Council of the Orders had ordered crackdowns by Dogma patrols throughout the city, further fanning the flames. This came to a head when discontented citizens, Knights of the Road and Athenaeum Fraternity stormed what was then the Order Halls and took it over, occupying the district for over a year before the authorites, already fustrated by the difficulties rebuilding, abandoned it for their new home.
With the collapse of the national economy of the Astorian Technocracy on the Astral realm of Ceria, House Osmanali, who had been underwriting their loans, reposessed a medium sized state. This lead to the other High Masks, and then the Factions, seeking to expand their own influence outside of Ur in order to compete. This competition has continued until the present day, with dozens of outposts established throughout the multiverse.
After the High Masks tried to set up a colony on Cintral, and it was destroyed by the Imperium, the Council of the Orders tried to place an embargo on Cintral. After nearly two decades the cost of guarding the ley line portals was deemed too much and they reopened.
A slave revolt on Pulvis escalated and led to intervention from factions from Ur. By the end of the war a small free state was created and the Council of the Orders had a new colony on the Mælstric Sleeper.
The Trial of Kindly Jaq would have been just another trial of an Athenaeum Fraternity demagogue were it not for the widespread civil unrest and a series of fires that devistated large sections of Fate's Bazaar, Order Halls and The Nest.
Several divine beings, including He Who Reigns and Marrius, simultaneously invaded the city. Their motives were not wildly known, and the events are shrouded in rumour and mystery, but undeniably the aftermath left The Rookery trapped in a magical prison, isolating the Queen and her Rooks from the city.