Somerset I is the sole habitable planet orbiting a orange K5V star of the same name. It is relatively Earth-like, despite the ruddy glare of its star. Time to jump is a mere 4.12 days at 1G, making the planet very accessible to traders. Somerset has a Class A HPG station, making is an important communications hub.

It has a long history of independence, but was eventually incorporated the the Rim Worlds Republic. It's also notable as the capital of one of the "Little Kingdoms" created during the 1st Succession War. It's House Uther Archonette is infamous for taking up arms against the Archon of the Commonwealth, which caused much suffering for the people of Somerset.

About 200 million people make their home on Somerset in year 3000. The planet is moderately prosperous. There is a fair bit of trade with the worlds of neighboring Coventry Province. Trade with the Periphery has slowed to a tickle as the Oberon Confederacy has grown in power and avarice.

Somerset is also the site of a small mechwarrior/ASF pilot academy, the such academy in the Trellshire. It may lack in both size and prestige, but it has strong roots and its graduates are proud of their education. Most graduates end up serving in various militia regiments or minor House guards.