The Start of the Jedi Order
Location: Tython, The Deep Core
Year: Roughly 25,783 BBY
The year 36,453 BBY; The Tho Yor appear and all ‘force sensitives’ are taken to Tython. There in the Je'daii were formed, to learn of this strange and mystic energy called "The Force. The Je’daii sought out Balance within the Force, following both the Bogan and the Ashla, the two Moons found orbiting Tython that represented both dark and light. Millenia passed before a splinter group of the Je'daii came forward, in roughly 25,783 BBY, and believed that Ashla was stronger than Bogan, and the better path to walk. They then left the Je'daii and their teachings and named themselves Jedi, forming a Jedi Council which consisted of the founding members: Jedi Masters Rajivari, Garon Jard, Cala Brin and Ters Sendon.
These Jedi believed they were given command over the Force to assist those in need, and wished to destroy those who used Bogan and the Dark. However Master Rajivari decided to break away from the Jedi and encouraged his own followers to walk the path of Bogan instead. Due to the darksided nature of Rajivari's "True Dark Sons of Tython" the Jedi attacked them, and thus the Force Wars began. The Force Wars lasted over a decade before the Jedi were victorious, the True Dark Sons of Tython scattered. However the Balance of Tython had been compromised and the planet reacted badly, the ecosystem destroyed. The Jedi decided to leave Tython with all the remaining Je'daii texts and scriptures that remained.
The Jedi left the Deep Core to instead journey to the Wild Space, a galaxy yet to be explored. They discovered a planet that was much like Tython had been before the Force Wars and so the Jedi colonized it and named it Ossus. There the Jedi founded an Academy, in seclusion where they devoted their time to the study of Ashla, and warnings agasint Bogan and the Dark. The Jedi purposely distanced themselves from the Galactic Republic, which at this point was newly formed.
They welcomed members of other force traditions, merging their philosophies and they carried on some traditions of the Je'daii. As such they continued to craft their durasteel blades as part of the initiation ceremony, where they would imbue them with the Force. A man had appeared in the years just before the Jedi left Tython, with a weapon called a Forcesaber and the jedi used this technology and advanced it using laser technology, thus creating the Lightsaber. Whilst the Jedi mainly used the durasteel blades they continued to work secretly upon the creation of the Lightsaber.
The Jedi joined the Republic in 24,953 BBY, but remained isolated on Ossus. The Order began to welcome others to Ossus and their leaders began to be influenced by those who had been in the galactic affairs for longer than they themselves had. The greatest influence was from a group of Caamasi whose teachings eventually led to the Jedi Orders views on justice and the role of peacekeeper.
The Jedi High Council began to assert their authority over the other Order members, limiting their individuality and who, effectively, could join. At this time, 24,500 BBY, an exiled Kashi Mer named Xendor gained a following on Ossus and eventually broke peacefully from the Order where he founded his own academy on Lettow. Many of the Orders members followed Xendor, and thusly claimed that the "Legions of Lettow" as they became known were too close to Bogan studies. This became known as the Great Schism.
The Jedi forced Xendor and his followers into conflict and the Jedi formed an army, with this they sought to crush the Legion of Lettow. Xendor, however, was the first to attack, landing ships on Ossus. The Legion were driven to the Core by the Jedi during the conflict. As the war broke out Xendor tried to spread propaganda about the Jedi throughout the republic, warning against the Jedi and their "false peacekeeping" ways. However, the Republic saw through the attempts of propaganda and thus began to aid the Jedi in their efforts against Xendor and the Legions.
As the war waged on conflict began on other planets, such as Coruscant, until finally Jedi Master Awdrysta Pina confronted Xendor at the Battle of Columus, therein slaying him and leaving the Legion of Lettow leaderless. Xendors lover, Arden Lyn, had her heart slowed by Jedi Master Awdrysta Pina before Xendor and the Legion were defeated, using Morichro, and she passed into the Force. In the months that past the Legion was driven away by the Jedi like the True Dark Sons of Tython had been, and the Great Schism ended. The conflict lasted one year.