Can anybody help me with the following please?

I am looking for the parents of John Christian of Castletown who married Elizabeth Jane Spence of Colby on 20 Nov 1889 at Arbory. They were both born approx 1868. I know Jane's grandparents were Thomas Qualtrough and Jane Quay. I can find no reference to her on the IGI.

Thank you for your help

Jane Coomer
Southampton, UK