Bilbo Baggins had played Frodo in the BBC radio series 20 years earlier. The movies omit the 17-year gap between Bilbo's 111th birthday and Frodo's departure from the Shire, as a result Bilbo mentions in Rivendell that he was unable to revisit the Lonely Mountain before his retirement. In Peter Jackson's "The Hobbit" film series, a prequel to "The Lord of the Rings", the young Bilbo is portrayed by Martin Freeman while Ian Holm reprises his role as an older Bilbo in "" (2012) and "" (2014). The International Astronomical Union names all colles (small hills) on Saturn's moon Titan after characters
The Hobbit songs—may be following the model of "The Icelandic Journals" by William Morris, an important literary influence on Tolkien. The evolution and maturation of the protagonist, Bilbo Baggins, is central to the story. This journey of maturation, where Bilbo gains a clear sense of identity and confidence in the outside world, may be seen as a Bildungsroman rather than a traditional quest. The Jungian concept of individuation is also reflected through this theme of growing maturity and capability, with the author contrasting Bilbo's personal growth against the arrested development of the dwarves. Thus, while Gandalf exerts a parental influence over Bilbo