Stuart Freeman, the British make-up artist who first created the look of the character Yoda for the 1980 Star Wars’ film The Empire Strikes Back, always said he based the puppet’s face on his own, and modelled the eyes on Albert Einstein to give him a kindly but wise look. But a younger version of the fictional Jedi master, who was already 900 years old in the early films, may have been uncovered in a medieval manuscript dating from the 14th century.