Origin of the Rebel Alliance?

Star Wars Rebels will undoubtedly ruin the Force Unleashed origin of the Alliance, with something cheesy and lame. Yet I wonder. Did the Force Unleashed introduce a new "origin" of the Alliance, and was their a different origin in pre-2008 canon?

All hope is not lost maybe starkiller and all the other tfu characters will still exist they just don't create the rebel alliance

But so far the rebel alliance originated from a "cowboy jedi" named kanan AKA Freddie prince JR and a band of punk pubscent teenagers who are killed off by the final season in 2BBY the story continues with rahm kota creating a militia starkillers storyline changes he turnes to the light and creates a contract on correlia between Kota's militia and alderannian resistance with Bail,Leia, mon mothma and garm bel iblis. Shaak ti, Kazdan paratus also join the alliance