1. In a castle, which direction would you travel to enter an oubliette?

2. In 1889, what family of surgeons founded a namesake clinic in Rochester, Minn., today one of the world’s top-ranked hospitals?

3. What last name does ketchup heiress Teresa Heinz use in politics, following her second marriage in 1995?

4. The wine industry uses 60 percent of the world’s annual crop of what Portuguese tree bark?

5. “There Was an Old Man With a Beard” is what type of silly five-line poem, one of 212 written by Edward Lear?

What’s the "Kennection" between all five answers?