Hello, Citygirl,
Do you have the 1851 census info for your William & Susan King. ? If not, here they are>>
1851 census
HO107/1742 folio 182 page 5
Holdenby House, Holdenby, Farnborough
William King age 50 Farmer 62 acres, 25 Labourers b Warwickshire, Farnborough
Susan M wife age 50 b Banbury
Susan M, dau age 22 b Farnborough
Samuel Gulliver son age 21 b ditto
William son age 19 b ditto
Emma dau age 18 b ditto
George son age 16 b ditto
Baptisms
Samuel Gulliver
13th Jan 1828 Fanborough
father William mother Susannah Mary
Emma
29th Mar 1831 Farnborough
father William mother Susannah Mary
George
2nd Mar 1834 Farnborough
father William mother Susannah Mary.
So, if you can identify this 1851 census family as your William & Susan M. King I think you can say that Susan M is Susannah Gulliver.
Hope this helps,
Meliora