The true story behind The Revenant has been embellished a little every time it's told. While there isn't much information about the early life of mountain man Hugh Glass - whom the book and movie was based on - his story of survival and revenge has been repeated enough times that it has become twisted. Similar to the survival story of Aaron Ralston depicted in 127 Hours, the cinematic version of The Revenant isn't quite the truth.
What is thought to be the real Revenant story took place when Glass - a fur trapper in the 1820's American frontier - was attacked by a bear, left for dead by two men paid to wait and bury him, and had his favorite rifle stolen. Glass made an unexpected, near-complete recovery and wanted his gun back. That's pretty much all historians agree happened.
Since no one alive was there or wrote anything down, the existence of Glass's story has relied entirely on oral communication, and anyone who's played telephone knows that isn't the most reliable information network.
It's Possible Glass Was A Ruthless Pirate Working Under Jean Lafitte In His Earlier Years
Glass Was Horrifically Mauled By A Bear, Sustaining Injuries That Seemed Almost Impossible To Survive
Despite Horrific Injuries, Glass Survived His Bear Attack
Glass Screamed At A Wolf Pack Until They Abandoned Their Kill So He Could Eat It
Glass Was Supposedly Captured By Pawnee Who Accepted Him, But Burned His Companion To Death
Glass Was Attacked By Groups Of Native Americans More Than Once