Question: When was the American cartoonist who created Greg Heffley in Diary of a Wimpy Kid born? 

Context articles: Diary of a Wimpy Kid: Rodrick Rules (film)
List of Diary of a Wimpy Kid characters
Greg Heffley
Diary of a Wimpy Kid
Diary of a Wimpy Kid (film series)
Diary of a Wimpy Kid: The Getaway
Zachary Gordon
Diary of a Wimpy Kid: The Last Straw
Diary of a Wimpy Kid (book series)
Jeff Kinney (author)

Diary of a Wimpy Kid: Rodrick Rules (sometimes known as Diary of a Wimpy Kid 2: Rodrick Rules) is a 2011 American comedy film based on Jeff Kinney's with a couple elements from "".
 The film stars Zachary Gordon and Devon Bostick.
 Robert Capron, Rachael Harris, Steve Zahn, and Peyton List also have prominent roles.
 The film was released on March 25, 2011 by 20th Century Fox.
 The film earned $72.4 million on a $21 million budget.
 It is the second film in the "Diary of a Wimpy Kid" film series preceded by 2010's "Diary of a Wimpy Kid" and followed by 2012's "".
This is a list of the characters in Jeff Kinney's book series "Diary of a Wimpy Kid", and in the film versions of the first, , and .
 "Diary of a Wimpy Kid" is a series of graphic novels written by American author and cartoonist Jeff Kinney.
 The books are the journals of the main character named Greg Heffley.
Gregory "Greg" Heffley is a fictional character and the main protagonist of the realistic fiction novel series "Diary of a Wimpy Kid" created by American cartoonist Jeff Kinney.
 He serves as both the unreliable narrator and antihero of the series.
 He is heavily inspired to his supposed girlfriend, Holly Hills.
Diary of a Wimpy Kid is a satirical realistic fiction comedy novel for children and teenagers written and illustrated by Jeff Kinney.
 It is the first book in the "Diary of a Wimpy Kid" series.
 The book is about a boy named Greg Heffley and his struggles to fit in as he begins middle school.
Diary of a Wimpy Kid is a series of films based on the series of books, "Diary of a Wimpy Kid" by Jeff Kinney.
 The series consists of four films: "Diary of a Wimpy Kid" (2010), "" (2011), "" (2012) and the latest fourth film " "(2017).
Diary of a Wimpy Kid: The Getaway is the twelfth book in the "Diary of a Wimpy Kid" series by Jeff Kinney.
 The book was unveiled during the 2017 Diary of a Wimpy Kid Virtually Live Event which was live streamed via YouTube as part of the 10th anniversary of the first book.
 The book is due to be published on November 7, 2017.
Zachary Adam Gordon (born February 15, 1998) is an American actor.
 Beginning his professional acting career at the age of eight, Gordon is a three time Young Artist Award Best Leading Young Actor nominee, best known for playing Greg Heffley in the first three films of the "Diary of a Wimpy Kid" film franchise, which are based on Jeff Kinney's #1 "New York Times" best seller novel series, "Diary of a Wimpy Kid".
Diary of a Wimpy Kid: The Last Straw is a novel written by American author and cartoonist Jeff Kinney, the third book in the "Diary of a Wimpy Kid" series.
 The book acts as a journal and follows the adventures of Greg Heffley, the narrator of the book, who is in the second half of his seventh-grade year.
 This book was released in the US on January 13, 2009.
Diary of a Wimpy Kid is a series of fiction books written by the American author and cartoonist Jeff Kinney.
 All the main books are the journals of the main character, Greg Heffley.
 Befitting a teen's diary, the books are filled with hand-written notes and simple drawings of Greg's daily adventures.
Jeffrey Patrick "Jeff" Kinney (born February 19, 1971) is an American cartoonist, producer and author of children's books, including the "Diary of a Wimpy Kid" book series.
 He is also attributed as the creator of the child-oriented website Poptropica.
 He also appeared in the "Diary of a Wimpy Kid" films as Holly Hills's father.