On familysearch there is a family of Anthony and Elizabeth WILSON who baptise the following children at Cumbria (assuming it is all the same family):
27 Oct 1793 Brian, Kendal
14 Feb 1796 Agnes, Kendal
28 Oct 1800 Betty, Kendal
28 Oct 1800 Jane, Kendal
28 Feb 1802 Margaret, Kendal
23 Sep 1804 Mary (born 12 Aug 1804), Selside
14 Sep 1806 Elleanor (born 28 June 1806), Kendal
3 Aug 1808 George, Kendal
22 Nov 1812 William (born 27 Jan 1811), Kendal
4 Feb 1814 Sarah, Burneside
21 July 1816 Robert (born 22 Jun 1816), Burneside
Some kind soul may have access to the parish registers to check.
This baptism for Eleanor fits with the census records for your Eleanor (53 in the 1861, 40 in the 1851 and 30 in the 1841)
These births would also fit with the newspaper notices found above.
Anthony WILSON married Elizabeth BRAITHWAITE on 11 Nov 1792. There is also an entry on the same date with bride's name Elizabeth STUARTSON. Not sure why there are two names.
A possibility: In the Westmorland Gazette, Saturday, Mar. 7, 1857 :
"DEATHS ... On the 1st inst., at Side House, Skelsmergh, Mrs. Elizabeth Wilson, aged 86 years."
Modified to add:
Elizabeth WILSON death registered Mar qtr 1857 Kendal (10b/360) aged 86
Buried 4 March 1857 at Selside, aged 87.
Also a possible death for Anthony WILSON Jun qtr 1855 at Kendal (10b/364) aged 89
Buried 25 Jun 1855 at Selside, aged 89.
