FreeREg has Frances as the wife of William, this fits the baptism of Frances Pawson in 1786.
There were quite a few Arlisses in Louth at the same time, some others were also butchers.
PS another look at baptisms for William Arliss there are 2 close together, the same with burials. It may give difficulty deciding which one is which !
Another PS: FreeREg: Harriet Askey aged 59, buried April 1870, in Louth Municipal Cemetery. I think this her.