As shown in the film, Muybridge's last name is misspelled on his gravestone as "Maybridge."
Eadweard Muybridge was born Edward James Muggeridge. He changed his name a number of times and used the pseudonym "Helios" in his early photographic career.
Muybridge is the last man in the United States to be acquitted of murder because the jury decided it was a justifiable homicide.