John forge and the chief are the same????

My friend,19 year old Gunner Rickelman,a human video game supercomputer,told me that john forge is master chief. At first i didn't belive him,but after doing some research i found out that it is possible and probably true. At the time of Halo Wars,There were many spartans.  At first I had doubts,because i didn't know master chief's last name. I feel like a n00b cause i didn't know that,but i'm not a video game supercomputer.