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Information from AUDIO: The Last Party on Earth needs to be added

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Granddad Prentice was the father of Jackie Tyler and the grandfather of Rose Tyler and Tony Tyler.

He smoked and died from a heart attack around 1997. (TV: Army of Ghosts)

According to Jackie in 2007, he came back as a friendly ghost. This ghost was actually a Cyberman that was passing through the Void to reach N-Space. (TV: Army of Ghosts)