The 1851 census shows 3 children born between 1843-1849. A copy of any one of their birth certs will give you her maiden name
This is from Cheshire BMD -
www.cheshirebmd.org.ukCheshire Birth indexes for the years: 1840 to 1845
MAIDEN Violetta Ann Weaverham Cheshire Central WV/02/090
Violetta Ann Maiden March qtr 1843 Northwich Volume: 19
Page: 199
or this from Staffordshire bmd
www.staffordshirebmd.org.ukStaffordshire Birth indexes for the years: 1849
MAIDEN Sarah Eleanor Wolstanton Newcastle-Under-Lyme WOL/4/83
Sarah Eleanor Maiden Dec qtr 1849 Wolstanton Volume: 17
Page: 295