DANVILLE — Less than an hour from the 209 is where the home of Eugene O’Neill — America’s only Nobel Prize winning playwright — chose to live at the pinnacle of his career. It is here on a 158-acre ranch in the San Ramon Valley near Danville that O’Neill and his wife Carlotta bought in 1937 a year after winning the Nobel Prize for Literature. It is here that O’Neill penned his most famous works — “The Iceman Cometh”, “A Moon for the Misbegotten”, “and Long Day’s Journey into Night”.