For what it is worth these seem the children baptised to William amd Ellen at Gainsborough
JANE POPPLE HOSTHEAD
Christening: 21 JAN 1827 Gainsborough, Lincoln
SUSANNA HUSTED
Christening: 12 NOV 1828 Gainsborough, Lincoln
WILLIAM HOSTHEAD
Christening: 03 JUL 1830 Gainsborough, Lincoln
HENRY HAWSTED
Christening: 30 JAN 1835 Gainsborough, Lincoln
WILLIAM HOSTHEAD
HELEN PHILLIPSON
Marriage: 12 NOV 1821 Gainsborough, Lincoln
You can have Ostead as a variant of the surname as well!
Susanna is the daughter who married in 1849 (It is true there is a Susannah Robinson born Gainsborough of the right age married to a Thomas Robinson on the 1851 census, but he was born Derbyshire and the couple are still together on the 1861 census).
Jane Popple Hosthead married in 1851.
On FreeBMD there is also a John Hosthead who married in Gainsborough registration district in 1838 (possibly baptism 1818 as Hoston).
You can see here the present coverage FreeBMD has of the civil registration through FreeBMD coverage charts
http://freebmd.rootsweb.com/progress.shtmlRegards
Valda