Eponymous is an adjective meaning: 1. Of, relating to, or constituting an eponym, such as “The Mary Tyler Moore” Show.
2. Named after something else or deriving from an existing name or word: “Programs such as He-Man and Masters of the Universe … were all created with the explicit purpose of selling the eponymous toys to children”. Source: http://www.thefreedictionary.com/eponymous
Etymology notes: Eponymous comes from the Greek adjective epōnymos, which is itself from onyma, meaning “name.” “Onyma” has lent its name to a number of English words, including “synonymous,” “pseudonym,” and “anonymous.” Traditionally, an eponymous person or thing (i.e., an “eponym”) might be a mythical ancestor or totem believed to be the source of a clan’s name.