UnScramble this Word: e s i d e n d?

Questions

Which Noel Coward play features Elyot and Amanda?

Dalcroze, Professor of Harmony at the Geneva Conservatoire, conceived of which form of exercise?

Who believe that the City of God will be founded in the USA?

What was built on the site of the old Waldorf Astoria hotel in New York?

Name of a barrister in Dickens Pickwick Papers?