I guessed the third one based on a memory of a Peanuts comic, but I can't find it online.  Has anyone seen it?

What American author set most of his novels in the fictional Yoknapatawpha County?

What English poet wrote The Rime of the Ancient Mariner ?

What Austrian composer, known as the "Father of the Symphony" wrote 104 of them?

What last name is shared by a winner of the 1945 Nobel Prize for Medicine and a British author whose estate sponsors a prize for thriller novels ?