A possible older child baptised Basford
CHARLES BUTLER
Christening: 07 MAY 1822 Basford, Nottingham
Father: WILLIAM BUTLER
Mother: ANN
William's age at burial shows he was may have been older than the age shown on the 1851 census (perhaps reducing his age with a younger second wife)
Burial 1st July 1860 All Saints Wath upon Dearne
William Butler aged 69
Jane's first child's baptism (no birth registration)
THOMAS DYSON
Christening: 16 JUL 1837 Wath Upon Dearne, Yorkshire
Mother: JANE DYSON
and potentially older children baptised in Wath upon Deane to a William and Ann
JAMES BUTLER
Christening: 31 MAY 1818 Wath Upon Dearne, Yorkshire
Father: WILLIAM BUTLER
Mother: ANN
Burial 28th February 1841 All Saints Wath upon Dearne
James Butler aged 22
JOSEPH BUTLER
Christening: 02 APR 1820 Wath Upon Dearne, Yorkshire
Father: WILLIAM BUTLER
Mother: ANN
Burial 26th July 1830 All Saints Wath upon Dearne
Joseph Butler aged 10
It might be worth checking whether William left a will to see whether he names any children from his first marriage that are unknown.
http://www.hmcourts-service.gov.uk/infoabout/civil/probate/index.htmSt Leonard Streatham baptism records are only covered on the IGI from 1801.
Regards
Valda