I have some "bare bones" that look promising,with the conclusion that Elizabeth Abbott(nee Roberts) is probably the illegitimate(?)child of Sarah Roberts,possibly from Ruthin as follows:-
Elizabeth Abbott,the wife of Thomas Abott(born Llanefydd) as in the 1891 census,living at Bedford Street,Rhyl(ref. 4627 42 9),is given as born Denbigh1852,and on the 1881 census as born 1854.(Sarah Ellen born 1872 is with them in 1891).Elizabeth who dies in 1927 is given as age 74,therefore born circa 1853.
There is a baptismal record for Elizabeth Roberts in Denbigh 1853,describing her as "base born" to Sarah Roberts and Thomas Roberts(not identified),of Mount Pleasant.
In 1861 Sarah Roberts,living at Mount Pleasant,marries Stephen Hughes at St.Hilary's Denbigh.Her father is given as Robert Roberts,though his profession is somewhat illegible.
The family may be that at Well Street Ruthin in 1841 ref 1404 23/35 25
Stephen and Sarah Hughes are to be found
1871 5643 77 23 Wepre
1881 5505 90 46 Northop
Amongst their chidren is Stephen Hughes,given as born 1866 in the census and perhaps it is his wife(or if he had a son Stephen,then his wife) who is referred to in the notice
Although I can't find a marriage,there is a Robert Pearson(born 1850 Scotland)
who is married to a Sarah Elizabeth(unidentified) born Wepre/Connahs Quay circa 1859( a pre marriage child of Sarah and Stephen?).Robert Pearson is in the police and ends up as inspector in Rhyl in 1911,living previously in Overton and Northop.There must be a reasonable chance that this is the family of Mrs Pearson
I'll see if I can flesh this out some more if you think I am on the right lines.
Regards
Rogher