Short answers, pulled from the story.
The Lincoln Cathedral Manuscript dating from approximately 1420 contains the line Robyn hode in scherewode stod which establishes the outlaw's presence in Sherwood Forest. This text predates all known ballads and confirms his existence before modern adaptations.
The Gest of Robyn Hode names King Edward as the ruler rather than Richard I which contradicts later popular versions. Early narratives depict Robin as a yeoman commoner who stood between peasants and knights including artisans like millers.
By the early 15th century at the latest Robin Hood had become associated with May Day celebrations across England where revellers dressed as him or members of his band. The first record of a Robin Hood game appeared in Exeter in 1426 though it did not indicate how old the custom was.
Historian David Baldwin identifies Roger Godberd as a key figure who supported Simon de Montfort during the Second Barons' War. Robert Hod of York appears in legal records from 1226 when his goods worth 32 shillings were confiscated for owing money to St. Peter's in York.
Disney released an animated film in 1973 featuring an anthropomorphic fox voiced by Brian Bedford. Animator Ken Anderson adapted elements from Reynard the Fox since Reynard was unsuitable as hero.