Jackson's Oxford Journal (Oxford, England), Saturday, September 24, 1887 has the usual probate notice asking anyone who has any claims against the estate to contact the solicitors handling the estate - Brook, Freeman and Batley of Huddersfield and London.
Identical notices in The Standard (London, England), Tuesday, September 27, 1887,
Jackson's Oxford Journal (Oxford, England), Saturday, October 1, 1887,
The Standard (London, England), Tuesday, October 04, 1887
Jackson's Oxford Journal (Oxford, England), Saturday, July 23, 1887, has a death notice for him:
DEATHS
July 19 at Catton, Northumberland, J. R. SYMM of 34 St Giles St, Oxford, aged 78
It's possible that there was some residual of his estate which needed to be tidied up. Perhaps the people being searched for were beneficiaries of his will, in which case they would not necessarily be next of kin.
His will, if you can access it, may explain the circumstances.
Judith