So in Halo Reach near the end of the game when Dr.Halsey gives the package to six to take to the pillar of autumn one of the nobles take Halsey to safety somewhere. So basically one of the nobles lives right?

It says in the Halo Fall of Reach re-write than Halsey’s escort died in battle, which was Jun.

He’s dead.

Just like Moa said, Jun is dead. Even in the original Fall of Reach you could tell because Halsey made it the mining facility alone until the other Spartans came.