When was the American cartoonist who created Greg Heffley in Diary of a Wimpy Kid born? 
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. Jeff Kinney (author): 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.
February 19, 1971