50kg is the minimum weight to do what? The Saturday quiz

The questions

1 Which Norfolk woman wrote the earliest autobiography in English?
2 Which world leader has the most Twitter followers?
3 The Blackwood convention is used in what game?
4 Who said: “We didn’t land on Plymouth Rock; the rock was landed on us”?
5 50kg is the minimum weight to do what?
6 Which 60s group was named for its members’ lack of height?
7 Which sport is played by the Nottingham Hellfire Harlots?
8 Whose death precipitated the Wars of the Diadochi?
What links:
9
Philip Glass; Robert De Niro; Vladimir Putin; Fred Housego?
10 Ash; battleship; fossil; slate (46 to go)?
11 Fundus; body; antrum; pylorus?
12 Jim Laker; Anil Kumble; Ajaz Patel?
13 Kate Winslet and Judi Dench; Kate Winslet and Gloria Stuart?
14 Singel; Herengracht; Keizersgracht; Prinsengracht?
15 Sarah Amherst; George Montagu; Thomas Bewick; Francesco Cetti?

Plymouth Rock in Plymouth, Massachusetts, 2016
Unlocked the Plymouth Rock clue? Photograph: Dee/Getty Images

The answers

1 Margery Kempe.
2 Narendra Modi (Indian PM, 73.5m).
3 Bridge.
4 Malcolm X.
5 Donate blood.
6 Small Faces.
7 Roller derby.
8 Alexander the Great.

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9 One-time taxi drivers.
10 Fifty shades of grey.
11 Regions of the human stomach.
12 Cricketers who took all 10 wickets in a Test innings.
13 Played younger and older version of same character: Iris Murdoch in Iris; Rose in Titanic.
14 Main canals of Amsterdam.
15 Gave names to birds: Lady Amherst’s pheasant; Montagu’s harrier; Bewick’s swan; Cetti’s warbler.