'This machine kills fascists' was written on whose guitar? The Weekend quiz

Whose is this guitar? Photograph: V&A

The questions

1 Which duchess, as a girl, had dolls called Mrs Astor and Mrs Vanderbilt?
2 The Sundarbans is a forest on what bay?
3 “This machine kills fascists” was written on whose guitar?
4 What movement’s name means Discipline of the Dharma Wheel in Chinese?
5 Bowser, or King Koopa, is whose archenemy?
6 Which two letters don’t appear in the official names of chemical elements?
7 Maryam Mirzakhani was the first woman to win which maths prize?
8 Which visiting bird is great grey or red-backed?
What links:
9 Andorra; Monaco; San Marino; Vatican City (monetarily)?
10 Vestibule and cochlea; Skye and Mull; Hohhot in China; barristers’ association?
11 Woking; Brackley; Milton Keynes; Grove; Kannapolis; Maranello?
12 Norris; Hytner; Nunn; Eyre; Hall; Olivier?
13 Contubernium; centuria; cohors; legio?
14 American Gothic; The Child’s Bath; Nighthawks; A Sunday On La Grande Jatte?
15 Dysnomia; Charon, Nix, Hydra, Styx, Kerberos; Hi’iaka, Namaka?

The answers

1 The Duchess of Windsor.
2 Bay of Bengal.
3 Woody Guthrie.
4 Falun Gong.
5 Mario (Super Mario games).
6 J and Q.
7 Fields medal.
8 Shrike.
9 Non-EU states issuing euro coins.
10 Inner: parts of inner ear; in Inner Hebrides; capital of Inner Mongolia; Inner Temple.
11 Bases of Formula One teams: McLaren; Mercedes; Red Bull; Williams; Haas; Ferrari.
12 National Theatre artistic directors.
13 Units of the Roman army.
14 Works in the Art Institute of Chicago: Grant Wood; Mary Cassatt; Edward Hopper; Georges Seurat.
15 Moons of dwarf planets: Eris; Pluto; Haumea.