4,250 BBY

The Vultar Cataclysm. Following the Third Great Schism, rebellious dark side Jedi are driven off Coruscant into the Vultar system. There, they attempt to use recently discovered ancient technology, but lose control of the machines and destroy the system.
The New Essential Guide to Characters; The New Essential Chronology.
 
 
 

4,068 BBY

Queen Amanoa of Onderon is born.
"A Guide to the Tales of the Jedi Universe" from Star Wars Insider #26.
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4,050 BBY

In the Hapes Cluster, the Jedi Knights defeat the male Lorell Raiders. The women of the region are freed from their servitude to the Raiders, and a new female-dominated society emerges.
The Courtship of Princess Leia and Star Wars Encyclopedia.
 
 
 

4,048 BBY

Drokko Kira is cast out of Iziz.
"A Guide to the Tales of the Jedi Universe" from Star Wars Insider #26.
 
 
 

4,021 BBY

Jedi Master Mroon Jassa begins training Jedi at his compound in the Truuine system.
Tales of the Jedi Companion, via Time Tales.
 
 
 

4,018 BBY

Oron Kira is born on Onderon.
"A Guide to the Tales of the Jedi Universe" from Star Wars Insider #26.
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Cay and Ulic Qel-Droma are born on Alderaan.
Tales of the Jedi: Dark Lords of the Sith #1.
 
 
 

4,016 BBY

Princess Galia of Onderon is born.
Tales of the Jedi Companion.