 Brown was born on September 4, 1997 and went to high school at Sidwell Friends School in Washington D.C. where he started all four years of high school totaling 97 tackles, 12 sacks and two INTs as a senior.He also played Running back in high school in which he totaled 136 carries for 1,012 yards, 22 receptions for 314 yards and 28 total TDs.He also was a member of the wrestling team where he went 23–0 as a junior.