Janet, I don't think they were married at Holy Trinity,as I have marriages for this period and they are not there, albeit I have a marriage ref. Sept.Qtr 1857, Wigan 8c 71.
I'll follow that up.
As regards their burials, they are in Holy Trinity.
Henry Lomax was buried 29/03/1900 aged 76.
Mary Lomax was buried 27/11/1906 aged79.
They were both living on Wigan Road, Bryn at the times of their deaths.
At this moment I don't have access to the grave refs. but I will try to find them for you and then find the graves, if possible.