I have a copy of the marriage certificate of John and Emma on 30th May 1852 at St. Michaels Church, Toxteth, in the Parish of Walton on the Hill. It lists him as a batchelor and shipwright by profession, and her as a widow. The residence at time of marriage was 19 Holland Street, Toxteth Park, Liverpool. His father was listed as Thomas Killip, a shoemaker, and hers as Charles Corlett a Blacksmith.
I also have a copy of a birth certificate for their child Robert born 4th March 1853 at home.
These were both originally researched by my father but he doesn't have them tied into the tree leading to myself. However the Thomas I think is the one born 23/2/1780 who married Ann Killey.That being the case I can tie it in further. The original problem is that the tree I was given gave John as being born in 1822 and so nothing fitted.
I will have a bit more of a look and see what else now fits.