This individual has no known canonical name. While the information presented is canonical, the individual described lacks an official name, thus the title is conjecture.
Fallen Jaffa was a Jaffa in the service of Moloc until the Jaffa Rebellion started. He was part of a group that needed to defend a transport however when Ishta and her Jaffa attacked he was shot and mortally wounded. His last words to Ishta where that he wanted to be free and then he died. (SG1: "Birthright")