I have just spent a bit of time updating my time line and library data files on my website. Cross referencing everything, and trying to ensure that there are no glaring errors, is a bit like remodelling a jungle-gym - connections have to be tested, and links/return links checked out otherwise you end up in a tangle.
So, the expanded timeline, going forward from the beginning of the Imperial presence in the RimWorlds, now looks like this:
|497||First Imperial presence in the Rimworlds in Kaorin and Berimar’s Sceptre subsectors.|
|525||Lord Kolin Venuraski is created Viceroy of the RimWorlds by Imperial Patent.|
|526||First Imperial contact with the Klarthur Confederacy in Riinu Subsector.|
|540||Sector Duchy of the Rimworlds established with its capital on Raelmar/Thurgandarn. Kolin I Venuraski is first Sector Duke.|
While this may not appear to be a huge breakthrough, it does represent a move forward in the development of the Sector.
Interestingly, when the Sector capital is established on Raelmar/Thurgandarn some fourteen years later, Kolin Venuraski is sufficiently confident in the security of his Spinward Border, that he establishes his capital some 17 parsecs from the terminus of his Whisp Route supply line in Berimar’s Sceptre Subsector and 16 parsecs from the nearest Confederacy outposts in Riinu Subsector. While ideally placed to oversee Rimward expansion into Nolgor Subsector, being at least four weeks behind the news to Spinward would be a major disadvantage if this frontier remained a flash point. At this point, I can only conclude that Venuraski’s Imperial Officials managed to reach some form of accommodation with the Confederacy Supreme Council.