It would be the location that is the biggest clue
Although many people in the world have claimed to be highly educated would be the best anyone can have that doesn’t outweigh the fact that many teens around the world are dropping out of high school and earning more then other adults doing things that school doesn’t teach. Just think instead of wasting your time at a school full of ignorant people you could be investing your time in something else that would actually give you a good future.
Diaries are kept by many to record their thoughts, ideas, and memories. Authors sometimes use a fictional character and their journal to tell a story. Other times, diaries from real people are turned into works of literature.
Anne Frank is one of the most famous victims of the Holocaust. She recorded events that she witnessed and her feelings in a journal her father gave her for her 13th birth. As a Jewish girl born in Germany, the Frank family hid from the Nazis and was soon found. They were brought to Auschwitz where Anne died. Her diary was given to her father, who then completed her wishes to be an author and had it published.
Samuel Pepys was a member of the British Parliment and administrator of the British Navy. His diary gave details about London and Britain at the time: the Great Plague, Great Fire of London, and coronation of King Charles II. It became a resource of events from the time, almost like a history book.\
Adrian Mole is the main character in a series of books written by author Sue Townsend. Adrian's story is told in the form of a diary and describes the troubles he goes through as a teenager. His writing also provides information about the history of the time he fictionally existed in, including the Falklands War.
Nella Last was a housewife who began writing a diary to record the lives of common British citizens. She wrote down things that happened to her on a daily basis, as well as the trouble her family experienced living through World War II.
The fictional diarist from your list is Adrian Mole, as he was created as a character and was not a real person.
Daisy's daughter, Pammy, is introduced and surprises Gatsby.