Lee Harvey Oswald
From Jenny Everywhere Wiki
After she studied records of the John F. Kennedy assassination in nearby realities, such as Abraham Zapruder's film, one version of Jenny Everywhere changed history in one universe by shooting the would-be assassin, a U.S. Marine, before he could take his shot. Insofar as Kennedy's Presidency was nicknamed “Camelot”, this made the assassin “Mordred”. (PROSE: Fragment: Guinevere and Mordred)
