Eugène O'Neill was an American playwright born on October 16, 1888, in New York City. He is known for his significant contributions to American theater, particularly in the early 20th century. O'Neill's works often explore complex themes such as family dynamics, personal struggles, and existential questions. He was awarded the Pulitzer Prize for Drama four times and received the Nobel Prize in Literature in 1936. Some of his most famous plays include Long Day's Journey into Night, The Iceman Cometh, and A Moon for the Misbegotten. O'Neill's writing is characterized by its emotional depth and innovative use of language. He passed away on November 27, 1953, leaving a lasting legacy in the world of theater.