Wikipedia
Puddleglum
Puddleglum is a fictional character in the children's fantasy series The Chronicles of Narnia by C. S. Lewis. Puddleglum appears in The Silver Chair, in which he is a principal character. He also appears briefly at the end of The Last Battle. Puddleglum is an uncommonly cheerful marsh-wiggle; however, as marsh-wiggles are best known for their pessimism, he is still rather exceptionally gloomy, described by other characters as a "wet blanket".
Lewis said that his gardener Fred Paxford served as a model for Puddleglum.