Chezkul

Chezkul, also spelled Chescoll, was a stone world in the Mid Rim. It was initially host to mining colonies that provided resources to the Republic military, and later an outpost world of the Imperial Military.

Apart from its vast reserves of iron and copper, Chezkul also hosted cave systems abundant in various minerals and jewels. By 19 BBY, Chezkul had a population of around only 15,000 Humans.

History
Chezkul was discovered, terraformed, and settled in around 1200 BBY during the New Sith Wars, after which it became host to mining colonies that directly supplied the Corellian war fleet, one of several war fleets that collectively made up the Republic Navy. Some centuries later, Chezkul's population revolted against the Galactic Republic and established an independent government that thrived off of its mineral and jewel reserves, relying on imported goods such as foodstuffs, textiles, livestock, and plants from neighboring star systems. Unbeknownst to the Republic, the Chezkul's "military" began carrying out pirate raids on passing merchants as a cheaper source of resources; in retaliation, the Republic Judicial Forces were deployed in 486 BBY to defeat the Chezkul pirates and occupy their homeworld, forcing Chezkul to rejoin the Republic after centuries of isolated sovereignty. Chezkul remained a mining outpost for centuries - most notably a source of the red-hued Chescollite rubies used in jewelry - until the Imperial era, during which Chezkul's privately-owned mines were seized by the Imperial government as one of the Galactic Empire's several hundred sources of iron and other common metals. Several resistance movements rose on Chezkul throughout the occupation, though these attempts ultimately failed and Chezkul remained under the Empire's stern grasp. In 4 ABY, after Emperor Palpatine's death and the Galactic Empire's decentralization, Moff Etryn Trainor of Eriadu - commander of the Imperial facilities on Chezkul (and former deck officer of the Republic Judicial Forces) - took his Imperial Army regiment and secured his hold on the world, establishing his own domain which he called the Imperial Free State of Chescoll. The Trainor dynasty would remain in control of Chezkul and its mines for more than five decades later until the reign of Hirion Trainor, grandson of Etryn Trainor, during which a local rebellion managed to defeat the Trainor dynasty's army of Imperial soldiers and assassinate most members of the dynasty. The only known survivor of the dynasty was Rian Trainor (nephew of Hirion Trainor), who went on to become a journalist.