Census records show Benjamin Connah from 1871-1911 in Bretton. He is with Rebecca until 1891, then he is a widower living with daughter Hannah in 1901. So Rebecca died between 1891 and 1901
Free BMD has a death that looks right... Jun Q of 1898
CONNAH Rebecca 49 CHester 8a 263
Benjamin died after 1911. This could be him (though Benjamin Connah is a fairly common name in the area.).
Sept Q of 1913
CONNAH Benjamin 64 Hawarden 11b 273
Benjamin Connah, born about 1850 father Joseph... in the Saltney area.
This is likely him - born 1848 and baptized 1849
https://familysearch.org/ark:/61903/1:1:KC5T-ZYDFather is Joseph Connah and mother is Hannah Griffiths - Bretton.
RK