|Name||Sheldon Allan Silverstein|
|Born||September 25, 1930|
Chicago, Illinois, United States
|Died||May 10, 1999 (aged 68)|
Key West, Florida, United States
|Family||Susan Taylor Hastings (girlfriend)|
Shoshanna Jordan Hastings (daughter)
Sarah Spencer (girlfriend)
Matthew De Ver (son)
|First appearance||Diary of a Wimpy Kid (online)|
|Last appearance||Diary of a Wimpy Kid: The Last Straw|
|“||But Shel Silverstein looks more like a burglar or a pirate, than someone who should be writing books for kids.||”|
|— Greg Heffley|
Sheldon Allan "Shel" Silverstein (September 25, 1930 - May 10, 1999) was a real-life American writer known for his cartoons, songs, and children's books. He appears in The Last Straw and the online book.
When Greg Heffley was younger, his father used to read him a Shel Silverstein book called "The Giving Tree" every night. The book had a picture of Shel Silverstein on the back, which disturbed Greg because he thought Shel looked more like a pirate or a burglar than someone who wrote books for kids.
After catching Greg getting out of bed one night, Frank Heffley used his fear of Shel Silverstein against him by saying that if he did so again, he might run into Shel in the hallway. As a result, Greg stopped getting out of bed at night and still doesn't, even if he needs to use the bathroom badly.