Illeville/Driscol City/Skaltine/Baraspine
Illeville is the Low Gothic name of the hive-spire fief purchased by Jax Guilliman at the House of Dust and Ash auction. Formerly belonging to the Rogue Trader Erasmus Haarlock the fief has suffered from a slow but steady decline since Haarlock vanished from the face of the galaxy. Under the guidance of Baron Jax (Haxtes) and his staff the fief has slowly gotten back on its feet and is beginning to generate a small but increasing profit. Illeville has six immediate neighboring fiefs; six baronial fiefs of varying size and power and one Free Guild. The core population of Illeville was initially around 80k, but this has increased to about 110k as of the current fiscal year (pickers contracted from other nobles are not included in the figures). Illeville has a capacity of at least half a million, even without any major expansions or refurbishments.
Illeville is located in Driscol City, which is any outlying 'spire' (it's not really a spire, more of an underground complex cut into a rocky ridge a dozen clicks outside the capital) of Skaltine, the planetary capital of Baraspine. Illeville isn't a big player in Skaltine politics, with a total population of around 10 million, divided among about a dozen major factions and numerous minor ones. The barons of Driscol are all sworn to the Countess Datar, who has her own fief, and controls the main utility services and access points to the spire. Driscol City has it's own aeroport/minor spaceport - it has been expanded and refitted using the resources of the Maiden and Illeville/the Countess shares in the profits.
Skaltine is the current (has been since the 6th century M41) planetary capital of Baraspine. It is the largest of Baraspines hive cities, with a population approximately 20% of the global total (i.e. around 300 million, so not much of a hive compared to the core worlds in Segmentum Solar). Skaltine's primary opponent in local politics is Kephistron Altis (which had the governorship for much of the early part of the 41st) and its associated cities. Skaltine lies in the harsh equatorial badlands - as such it is almost completely subsurface, carved into a range of low wind-wracked mountains. Skaltine lies in one of the premiere picking zones and many of its nobles are engaged in various picking activities.