In 1836 Mary Eaton was bequeathed £100 in the Will of her uncle Benjamin Eaton of Guestling, blacksmith.
In 1838 Mary Eaton was a beneficiary of her father's Will.
At the time of the 1851 England Census Mary Eaton, aged 42, born in Guestling Sussex, unmarried, servant, was with her brother Henry Eaton and his family in Blacksmiths Arms, Guestling.
At the time of the 1861 England Census Mary Eaton, aged 53, born in Guestling Sussex, unmarried, grocer, was with her brother Henry Eaton and his family in Guestling Green, Guestling.
At the time of the 1871 England Census Mary Eaton, aged 63, born in Guestling Sussex, unmarried, letter carrier, was boarding with [her sister-in-law] Jane Eaton, post office keeper, in Guestling Green, Guestling Sussex.
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Mary Eaton of Halton died aged 70 years (burial record).