He had been living with Alzheimer's for years.
Sir Terry Pratchett, renowned fantasy author, dies aged 6…
Fantasy author Terry Pratchett, famed for 'Discworld' series, dies at 66
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Terry Pratchett, author of fantasy 'Discworld' novels, dies at 66
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Terry Pratchett, Author and Creator of Fantastical Worlds, Dies at 66
Fantasy author Terry Pratchett dies at 66
Discworld' Novelist Sir Terry Pratchett Dies at 66
Discworld Author Terry Pratchett Dead at 66 – What's A Geek