On 21 May 1858, Edward Harper died in Grouville parish, Jersey; he made a will 3 days before he died (accessible via the Jersey Archives site at https://catalogue.jerseyheritage.org/collection/Details/archive/110090231) which left everything to his wife Dorothy Walters, on condition that she paid 5 shillings for the poor of Grouville parish, and £50 to her granddaughter Sophia Gilbert when she attained her majority. [Sophia was not Edward's grand-daughter; he had no descendants.].
As the will was made so shortly before he died, and he was described as a 'landed proprietor' in the 1851 census of Jersey, I believe that there were probably sufficient funds etc. in his estate to cover the specific bequests with a remainder to his wife (who was his sole executor).
Dorothy died in March 1859 (9 months after her husband) of 'Decay of nature' (Old age). She had no surviving children, but between 1 and 4 surviving grand-children (whose ages ranged from 16 to 30, all in England).
There is no will made by Dorothy Harper or Dorothy Walters that I can find in the Jersey Heritage catalogue.
It is of course possible that she never got round to making a will of her own, but if that had been the case in England and Wales, there would at least have been an admon to help understand who sorted out her estate. And I would also be able to look at Death Duty registers.
How can I learn what happened to her estate, and whether any of it went to her grandchildren?