Is there any chance you have gotten Williams birth year mixed up with his marriage year ?
Jun qtr 1900
William Henry Tonks married Sarah Ann Williamson, Sheffield, 9c, 858.
Census 1901
RG13/4387
folio 137
page 49
26 Berkley Rs, Atercliffe cum Darnel, Yorkshire.
Joseph Williamson, head, married, 47, ??plate driller, bn Glossop, Derby.
Mary, wife, married, 48, bn Muston, Leics.
Fred, son, single, 22, ? salesman, bn Sheffield.
Bernard, son, single, 15, general lab, bn Sheffield.
Frank, son, single, 12, bn Sheffield.
Elsie, daughter, single, 11, bn Sheffield.
Albert, son, single, 9, bn Sheffield.
Alice, daughter, single, 7, bn Sheffield.
Charlotte, daughter, single, 5, bn Sheffield.
William H Tonks, son in law, married, 26 (1875), steel dresser, bn Stavely, Derby.
Sarah A Tonks, daughter, married, 24 (1877), bn Sheffield.
Census 1891
RG12/3840
folio 90
page 11.
55 Surbiton Street, Atercliffe cum Darnell, Yorkshire.
William Tonks, head, widow, 48, coal miner, bn Stafford.
Annie, daughter, 18, bn Marsdon Moor, Derby.
William H, son, 17 (1874), coal miner, bn Staveley.
Mary E, daughter, 15, bn Derby..
Aaron, son, 12, bn Hoyland, Yorkshire.
Richard, son, 10, bn Rotherham.
Ernest, son, 7, bn Sheffield.
Albert, son, 6, bn Sheffield.
Hope this helps.
Sarah