But [Bilbo] had no close friends, until some of his younger cousins began to grow up. The eldest of these, and Bilbo’s favourite, was young Frodo Baggins. When Bilbo was ninety-nine he adopted Frodo as his heir, and brought him to live at Bag End; and the hopes of the Sackville-Bagginses were finally dashed. Bilbo and Frodo happened to have the same Birthday, September 22nd. ‘You had better come and live here, Frodo my lad,’ said Bilbo one day; ‘and then we can celebrate our birthday-parties comfortable together.’
- J.R.R. Tolkien, The Fellowship of the Ring, “A Long-expected Party”
[ID: A 3x3 moodboard for Frodo and Bilbo Baggins.