Good post from eggshaped, in the first forum - I thought this was QI because if I'd been asked I would certainly have said either Canterbury Tales or the Bible - wouldn't have had a clue about the real answer:
13781. Fri Jan 14, 2005 6:55 am Question: What was the first book to be printed in English?
Forfeit: Canterbury Tales
Actual Answer: A translation of Raoul Le Fevre’s romantic novel Recueil des Histoire de Troye (or the Recounting of the History of Troy).
Caxton printed this while in exile in Cologne in 1475, he then returned to England and printed Canterbury Tales in 1477. CT therefore was the first major book to be printed in England, but not the first in English.
Not exactly QI, but when Caxton died, his work was carried on by his brilliantly named assistant Wynkyn de Worde.