Originally posted by queeq
No one said Sifo-Dyas was killed, only that he died.
Think again. Obi-Wan said "Master Syfo-Dias was killed almost ten years ago!" So he was killed. I think Master Syfo-Dias was a Jedi who was killed around the time of TPM and Palpatine used that name and told the Kaminoens to create the clone army.