Here are all the confirmed deaths of known jedi from the prequals-
Qui-gon Jinn:Killed by Darth Maul
Yarael Poof:Killed by Jango Fett and Zam Wessell
Sifo-Dyas:Killed and frozen by Count Dooku, blood transfused to Grievous
Yaddle:Killed on Mawan
Adi Gallia:Killed by Grievous right before episode III
Oppo Rancissis: Killed in the Clone Wars
Cin Drallig: Killed in the temple massacre by anakin
Shaak Ti: ditto
Mace Windu, Saesee Tiin, Kit Fisto, and Agen Kolar: Killed trying to arrest Palpatine
Ki Adi Mundi-shot by his own troops on Mygeeto
Quinlin Vos:bombed by his troops on Boz Pity
Barriss Offee: Ditto
Stass Alie: shot down from her speeder on Salucamiea
Plo Koon: shot down in his fighter on Cato Neimoidia
Aayla Secura: shot by her troops on Felucia
Luminara Unduli: shot by her troops on Kashyyk
__________________ Land of the free, home of the brave...
Do you think we will ever be saved?
In this land of dreams find myself sober...
Wonder when will it'll all be over...
Living in a void when the void grows colder...
Wonder when it'll all be over?
Will you be laughing when it's over?
Most non-fans and some fans don't know or care about all of the Jedi that were generally background characters in the PT. Ki-Adi Mundi was used in the first Dark Horse regular comic series that preceded The Phantom Menace and he has been used in the comics ever since. Aayla Secura, Quinlan Voss, Shaak Ti, Barris Offee, Luminara Unduli, Sasee Tinn were all used in the comics, the Expanded Universe books, and the Clone Wars cartoon series. That's why some fans know more about them than others and why some (like Aayla and Shaak Ti) have a special place in fan's hearts. It's too bad George did not have time or understanding to give them all the play they deserved.
For the few of you who did not know, Anakin's scar near his eye was caused by female Dark Jedi / Sith Apprentice Asajj Ventriss, a character from the Dark Horse Star Wars comics, Star Wars - Republc & Star Wars- Obsession. You can see Anakin fight her in season one of the Clone Wars cartoons, but he gets the scar in an issue of Star Wars Obsession. Then in season two of the Clone Wars cartoons, Padme notices the scar on Anakin's face.