Lyons neighbouring systems
|X:Y Coordinates||-23.01 : 38.72[e]|
Note: X and Y are coordinates (light years on XY plane) relative to Terra at (0, 0)
| Jump point
|Atmospheric pressure||Standard (Breathable)|
|Highest native life||Reptiles|
|Ruler|| Nancy Carter (Governor)|
Ulga Jarmann (Planetary Legate)
|Capital||Clovis' Point |
- 2271 - Inhabited world 
- 2319 - Terran Hegemony 
- 2341 - Terran Hegemony 
- 2571 - Terran Hegemony 
- 2596 - Terran Hegemony 
- 2750 - Terran Hegemony 
- 2765 - Terran Hegemony 
- 2767 - Amaris Empire 
- 2771 - Amaris Empire 
- 2772 - Terran Hegemony (from September)
- 2784 - Terran Hegemony 
- 2785 - Lyran Commonwealth 
- 2786 - Lyran Commonwealth 
- 2822 - Draconis Combine 
- 2864 - Lyran Commonwealth  
- 3025 - Lyran Commonwealth  
- 3030 - Lyran Commonwealth  
- 3040 - Federated Commonwealth 
- 3050 - Federated Commonwealth 
- 3052 - Federated Commonwealth  
- 3057 - Lyran Alliance 
- 3058 - Lyran Alliance 
- 3062 - Lyran Alliance 
- 3067 - Lyran Alliance  
- 3075 - Word of Blake Protectorate 
- 3079 - Word of Blake Protectorate 
- 3081 - Republic of the Sphere 
- 3085 - Republic of the Sphere 
- 3130 - Republic of the Sphere 
- 3135 - Independent world 
- 3145 - Clan Jade Falcon 
Era Specific Data
Lyons was settled early in humanity's expansion across the stars. It featured a warm climate and arable land that readily supported crops imported from Terra. Lyons greatest claim to fame was the large number of volcanoes and volcanic activity that rocked the surface periodically. To avoid the problems presented by volcanoes, the inhabitants originally settled on the edges of the Fedkirk continent, leaving the center of the continent largely abandoned. The other continents (Glastone, Leuben, and Pairse) were settled the same way. Shortly after the immigrants arrived, the local mining industry produced enough for other industries to function. This let Lyons achieve self-sufficiency in short order.
Lyons was one of the worlds that was abandoned by the Terran Alliance following the Outer Reaches Rebellion and the Demarcation Declaration of 2242. Having become independent as a result of the Demarcation Declaration, Lyons was subsequently added to the resurgent Terran Hegemony; whilst some worlds joined the Hegemony during its early years as a result of diplomatic and trade incentives, many more were conquered in "campaigns of persuasion" launched by Director-General James McKenna, the first of which began in 2316 and ended with the capture of Towne in 2317. Lyons was one of the worlds added to the Hegemony during or around the time of this first military campaign. By the end of the Reunification War Lyons had become one of the worlds within the Lone Star Province of the Terran Hegemony.
In 2966, the Draconis Combine conducted a raid on Lyons. However, a Lyran aerospace force was hidden on Lyon's moon, Bier. Once the Kuritan forces were committed, the Steiner forces dove through the attacking force causing tremendous damage and chaos. Only one Kuritan ship escaped the attack.
In 3025, Lyons was the primary base for the 12th Star Guards, a mercenary unit with a lineage dating to the collapse of the Star League. Two regiments were based on the planet - the 3rd Regiment, commanded by Hauptmann-General Mitch DeChavilier, and the 7th Regiment, commanded by Colonel Thomas Scovy.
During the Fourth Succession War, the 12th Star Guards had moved off-world, participating in attacks on Kurita space and in 3029, the Kell Hounds mercenary unit, commanded by Colonel Morgan Kell established a base there, including the town of New Freedom. The town was home to numerous members of the underground Heimdall movement. The town was destroyed in a raid by the 3rd Dieron Regulars and most of the population was murdered by the Kuritan unit. The Kell Hounds returned to New Freedom and completely routed the Kurita forces, returning the planet to relative peace.
Lyons was captured by the Word of Blake during the Jihad. In September 3076, however, a Clan Ghost Bear/Clan Snow Raven task force liberated the world, with the Ghost Bear's Xi Galaxy conducting the ground campaign. The Clan troops in November, left shortly after liberating the world, leaving two Inner Sphere units to help rebuild.
Unfortunately tensions between the 6th Pesht Regulars and 7th Donegal Guards boiled over, and the traditional enemies fought with each other, inflicting damage on both units. Eventually General Belle Lee arrived on the world and transferred both the House units off-world. The 31st Battalion of the ComGuard Sixth Army was transferred in to replace them.
The clashes between the 7th Donegal Guards and 6th Pesht Regulars began with the Donegal Guards launching an air raid followed by an airborne infantry assault on the primary base used by the Pesht Regulars on the 12th of December 3076; the bulk of the Pesht Regulars were conducting war games on the Alterland continent, and the Donegal Guards' forces took less than an hour to capture the facility. The Pesht Regulars retaliated the next day, assaulting the Donegal Guards forces at the Federated-Boeing International DropPort, the beginning of a series of skirmishes throughout the day. Ernestine Chiery, an aide to Governor Michael Bloomsworth, confirmed later the same day that the planetary authorities had requested assistance from the allied coalition command to try and defuse the situation even as they evacuated civilians from the effected areas. General Lee and her forces arrived in early January, and by the 5th of January had stopped the fratricidal combat, removed both units from their posts and replaced them with the ComGuard forces.
- Twelfth Star Guards
- Lyons FTM
- Lyons FTM
- Sixth Pesht Regulars (from liberation onwards)
- Seventh Donegal Guards (from liberation onwards)
- Thirty-first Battalion
| Systems within 60 light-years (distance in light years)|
Closest systems first:
|Muphrid||27.9||Sabik||28.7||Dromini VI||29.5||Lone Star||30.2|
|Killbourn||43.5||Pike IV||43.7||Alula Australis||44.7||Haddings||45.8|
- Dark Age: Republic Worlds (3130), p. 217, "Lyons World Profile"
- Handbook: House Marik, p. 16, "Free Worlds League Founding [" Cite error: Invalid
<ref>tag; name "HB:HMp16" defined multiple times with different content
- Handbook: House Kurita, p. 18, "Draconis Combine Founding - 2319"
- Handbook: House Steiner, p. 13, "Lyran Commonwealth Founding "
- Handbook: House Steiner, p. 25, "Lyran Commonwealth after Age of War "
- Historical: Reunification War, p. 159, "Inner Sphere - 2596"
- Era Report: 2750, p. 37, "Inner Sphere - 2750"
- Historical: Liberation of Terra Volume 1, p. 11, "Inner Sphere - 2765"
- Historical: Liberation of Terra Volume 1, p. 104, "Rim Worlds Republic -  Map"
- Historical: Liberation of Terra Volume 1, p. 138, "Operation LIBERATION Wave 1 [July 2772 - December 2774]"
- Historical: Liberation of Terra Volume 2, p. 118, "Digesting The Hegemony"
- First Succession War (Source Book), p. 25, "Inner Sphere -  Map"
- Handbook: House Steiner, p. 36, "Lyran Commonwealth after First Succession War "
- First Succession War (Source Book), p. 113, "Inner Sphere -  Map"
- Handbook: House Steiner, p. 40, "Lyran Commonwealth after Second Succession War "
- Handbook: House Marik, p. 38, "Free Worlds League after Second Succession War "
- Handbook: House Steiner, p. 47, "Lyran Commonwealth after Third Succession War  Map"
- Handbook: House Marik, p. 42, "Free Worlds League after Third Succesion War  Map"
- House Kurita (The Draconis Combine), p. 132, "District and Prefecture Boundaries of Kurita Space"
- Handbook: House Steiner, p. 56, "Lyran Commonwealth after Fourth Succession War  Map"
- Handbook: House Marik, p. 51, "Free Worlds League after Fourth Succesion War  Map"
- Handbook: House Steiner, p. 59, "Lyran Commonwealth after War of 3039  Map"
- Historical: War of 3039, p. 133, "Inner Sphere - 3040"
- Era Report: 3052, p. 11, "Inner Sphere - 3050"
- Handbook: House Steiner, p. 61, "Lyran Commonwealth after Clan Invasion  Map"
- Era Report: 3052, p. 23, "Inner Sphere - 3052"
- Era Report: 3062, p. 11, "Inner Sphere Map "
- Handbook: House Marik, p. 54, "Free Worlds League after Operation Guerrero  Map"
- Era Report: 3062, p. 29, "Inner Sphere Map "
- Handbook: House Steiner, p. 69, "Lyran Commonwealth after FedCom Civil War  Map"
- Handbook: House Marik, p. 54, "Free Worlds League after FedCom Civil War  Map"
- Jihad Secrets: The Blake Documents, p. 64, "Inner Sphere - 3075"
- Field Report: LAAF, p. 19, "Lyran Alliance Deployment Table "
- Jihad: Final Reckoning, p. 63, "Inner Sphere Map - [March 3081]"
- Field Manual: 3085, p. 127, "Inner Sphere Map - [October 3085]"
- Map of the Inner Sphere 3130
- Era Report: 3145, p. 11, "Inner Sphere Map - "
- Era Report: 3145, p. 39, "Inner Sphere Map - "
- Jihad Hot Spots: Terra, p. 21, "Cracks In The Facade"
- The Star League, p. 16, "Terra's Errant Flock"
- Handbook: House Kurita, p. 18, "Draconis Combine Founding "
- Technical Readout: 3025, p. 162
- Jihad Hot Spots: Terra, p. 22, "Timeline of the Jihad"
- Jihad: Final Reckoning, p. 56, "The Jihad In Review"
- Field Report: Clans, p. 10, "Xi Galaxy"
- Jihad Hot Spots: Terra, p. 23, "Timeline of the Jihad"
- Field Manual: SLDF, p. 251, "SLDF - Terran Hegemony Military Command Map"
- First Succession War (Source Book), p. 137, "First Succession War Deployment Table - DCMS"
- House Steiner (The Lyran Commonwealth), p. 117, "Unit Deployment Table"
- NAIS The Fourth Succession War Military Atlas Volume 1, p.45, "Operation GÖTTERDÄMMERUNG"
- Historical: War of 3039, p. 137, "Deployment Table"
- Objective Raids, p. 19, "FedCom Deployment Table"
- Shattered Sphere, p. 47, "Lyran Alliance Deployment Table"
- Field Manual: Updates, p. 177, "Lyran Alliance Deploment Table"
- Field Manual: 3145, p. 168, "Clan Force Deployments - Clan Jade Falcon"
- ComStar (sourcebook)
- Dark Age: Republic Worlds (3130)
- Era Report: 2750
- Era Report: 3052
- Era Report: 3062
- Era Report: 3145
- Field Manual: 3085
- Field Manual: 3145
- Field Manual: Updates
- Field Manual: SLDF
- Field Report: Clans
- Field Report: LAAF
- First Succession War
- Handbook: House Kurita
- Handbook: House Marik
- Handbook: House Steiner
- Historical: Liberation of Terra Volume 1
- Historical: Reunification War
- Historical: War of 3039
- House Kurita (The Draconis Combine)
- House Steiner (The Lyran Commonwealth)
- Jihad: Final Reckoning
- Jihad Hot Spots: Terra
- Jihad Secrets: The Blake Documents
- Map of the Inner Sphere 3130
- NAIS The Fourth Succession War Military Atlas Volume 1
- Objective Raids
- Shattered Sphere
- The Star League
- Warrior: Coupé (novel)