Charles and Esther were married in a civil ceremony in 1854 in Bolton.1
Marriage/Union Notes
Lancashire Marriage indexes for the years: 1844 HORROCKS * Charles ISHERWOOD Esther Bolton Register Office or Registrar Attended Bolton RO/5/9 HORROCKS * Charles PILKINGTON Esther Bolton Register Office or Registrar Attended Bolton RO/5/9
It appears that Esther died, aged only 30, shortly after giving birth to a daughter (unnamed), that also died.
Lancashire Death indexes for the years: 1855 HORROCKS (girl) 0 Westhoughton WH/4/291 HORROCKS Esther 30 Westhoughton WH/4/308
The births show the mother's maiden name was GREGORY, so this must be another family (there are several HORROCKS+GREGORY marriages). Joseph Horrocks married Esther Gregory in 1848.
Lancashire Birth indexes for the years: 1855 HORROCKS (girl) GREGORY Westhoughton WH/6/244
Two other possibilities are: Lancashire Death indexes for the years: 1858 HORROCKS Esther 42 Blackley BLA/4/288 Lancashire Death indexes for the years: 1859 HORROCKS Esther 53 Bury North BN/15/54