BIVRI2 has
David SOUTH (35, son of George) to Eliza FARMERY (30, dau of Thomas) at Gt Grimsby 7 April 1881. This database does not normally indicate marital status.
There is a possible burial for Eliza SOUTH at Grimsby, 27 June 1895 age 47.
Divorce was almost an impossibility for ordinary people. If they split up, they either lived in sin or married bigamously.
One of my lot flitted in and out of "marriage"-
1861 "Wife" of John VINE (while husband John DANN was in prison)
1871 Housekeeper to John VINE (Poulterer)
1881 "Wife" of John VINE
1887 Buried as Harriet Matilda DANN
Another ancestor of mine and his 2nd wife were both "widowed" in 1901.