Toni
It seems that I didn't post one of my replies. The marriage certificate dated 1908 gives John Ernest Whiting, age 28, Engineer, address Fair ground, Main Road, Darnall, father John Whiting, Engineer (doesn't say deceased)
Mary Ellen Bishton, age 22 address Fairground Main Road, Darnall, father William Bishton, Traveller (again doesn't say deceased)
Witnesses - The mark of James Holmes & Eliza Ann Bishton (who I think is her sister & who married James Holmes)
The 1911 census shows John Ernest born Deptford London S.E and Mary Ellen born Darnall, Sheffield, living with 2 children in a caravan at Bamforth Street, Penistone Road, Sheffield.