What's the Kennection? #117

In Crockett Johnson's classic book that's sold 2 million copies since 1955, who draws his own adventures with a purple crayon?

What's the name of the cook that "someone's in the kitchen with" in the folk song "I've Been Working on the Railroad"?

Which county in Ireland lent its name to a U.S. Secretary of State, whose family changed their surname from Kohn?

Richard Burton and Elizabeth Taylor played what warring married couple in 1966's Who's Afraid of Virginia Woolf?

According to the band's name, what Memphis musical prodigy fronts the funk quartet called the M.G.'s?

What's the "Kennection"?