Wendi Deng gained popularity for springing to her husband's aid when a protester threw a custard pie at him as he appeared before MPs to answer questions about phone hacking in 2011.
At 44, Ms Deng is 38 years younger than Mr Murdoch, who is 82.
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A bronze drum, alongside a plaque for Fusilier Rigby, will be located at Middleton Memorial Gardens.
The desk, where the author wrote Great Expectations and his last, unfinished novel The Mystery of Edwin Drood, will go on permanent display.
We spring forward an hour at 1am on Sunday, to mark the start of British Summer Time.