I read of the bio and it could spoil the film.
After reading the Hugh Glass bio, I re-watched the trailer. It does look like a good historical film. Taking into account the time period, it was one of the largest human migrations in recorded history. I am hoping for an untainted historical portrayal of Native Americans and Explorers...
When it comes to historical films, I like to know what is going on. Why make a film of this person's life? For me, reading the bio enhanced a desire to watch the film. Hugh Glass lived an amazing life.
Again, on the spoiler alert: Depending on personal preference, reading the bio could ruin the film.