In his father's Will (written 1767) Giles was bequeathed his tenement in Wootton Bassett where [Giles's uncle] Thomas Maskelyne was living.
Giles was bequeathed £20 in the Will of his brother John Maskelyne of Harris Crofts in Wootton Bassett, yeoman (written 1774).
Giles was bequeathed £10 or 40 shillings a year over five years in the Will of his brother William Maskelyne of Harris Crofts in Wootton Bassett, yeoman (written 1777).
Named as a beneficiary in his mother's Will (written 1800).
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Giles Maskelyne of Wootton Bassett died aged 61 years (burial record).