William Shakespeare's only son
Hamnet Shakespeare was the only son of William Shakespeare and Anne Hathaway, and the fraternal twin of Judith Shakespeare. He died at age 11. There are several theories on the relationship, if any, between Hamnet and his father's later play Hamlet. Other theories postulate connections between Hamnet's death and the writing of King John, Romeo and Juliet, Julius Caesar, and Twelfth Night, among others.