 In addition, the Society for Creative Anachronism, a medievalist re-creation group, has its roots in science fiction fandom.It was founded by members thereof; and many science fiction and fantasy authors such as Marion Zimmer Bradley, Poul Anderson, Randall Garrett, David D. Friedman, and Robert Asprin have been members of the organization.Media fandom split from science fiction fandom in the early 1970s with a focus on relationships between characters within TV and movie media franchises, such as "Star Trek" and "The Man from U.N.C.L.E.