First Jedi Purge (Old Sith Wars)

Concurrent	Old Sith Wars
First Jedi Purge
Beginning	5,159 BBY
End	5,113 BBY
Place	Ossus Tython
Outcome	Jedi nearly die out
Combatants
Jedi Order
Sith Empire
Commanders
Darth Tenebrous

The First Jedi Purge was started by Darth Tenebrous to completely destroy the Jedi, however when Tenebrous's death came, the purge ended.