Can appreciate that this is a long shot, but I have some Jones' in Verwig around the 1850's. Both Jones I have have wives minus maiden names.
John Jones with a wife called Catherine (both born around 1830)
Their son
Evan Jones and a wife called Anne (both born about 1859)
They would have moved to Cardigan proper by the late 1880's 1890's as I have a son Gwillym born in 1898 in Cardigan
Long shot I know but would either of the girls names and DoB's match up with anything with your research?
Rich