Problem: Kenneth Moore portrayed which famous 2nd World War fighter pilot in the 1956 film Reach for the Sky?
Answer: douglas bader

Problem: Which city is home to the world's oldest stock exchange?
Answer: amsterdam

Problem: Which member of the Royal family is Earl of Carrick and Baron of Renfrew?
Answer: prince charles

Problem: By what name is a collector of postcards known?
Answer:
deltiologist