No suitable couple found, 1851.
Trying to follow your logic:
Assume this is the marriage
Cranfield, John 1850 September Marriages Lexden
Warren, Mary Anne 1850 September Marriages Lexden Vol 12 p199
Is this the happy couple?
1851 Copford, Essex HO107 1782 431 p18
Water Mill Cottages
John Cranfield, head, mar, 32, Bricklayers Labourer, b. Copford
Mary Cranfield, wife, mar, 29, b. Stanway, Essex
John Cranfield, son, 4, Scholar, b. Stanway
Tamer Johnson, lodger, mar, 24, Tailoress, b. Copford
Charles Warren, brother in law, unm, 26, Lab on Railroad, b. Stanway
and
1861 Haverhill, Essex RG9 1124 82 p30
Hamlet
Ewin Binks, head, mar, 43, Beer Retailer & Carter?, b Little Wratting, Suffolk
Martha Binks, wife, mar, 42, b. Haverhill, Suffolk
William Falgate, lodger, wid, 50, Navvy (Railway), b. NK
John Cranfield, lodger, mar, 40, Navvy (Railway), b. NK
John Cranfield, lodger, unm, 14, Navvy (Railway), b. Stannaway, Essex
Joseph Lucas, lodger, unm, 21, Navvy (Railway), b. Oakley, Essex
William Wilby?, lodger, unm, 39, Navvy (Railway), b. Fordham, Essex
1861 Stanway, Essex RG9 1103 104 p8
Stanway Street
Mary Ann Cranfield, head, mar, 39, Seamstress, b. Stanway
[age has been transcribed as 30. Looks like 39 to me]
< He died and she had remarried by 1861 >
If you are looking for the Mary Ann Cranfield who m. Oliver Firmin
[your query from October]
1851 Copford HO107 1782 426 p8
Godbolts Cottage
William C(r?)anfield, head, mar, 70, Labourer, b. Copford
Mary Canfield, wife, mar, 40, b. Aldham, Essex
Mary Ann Canfield, dau, unm, 19, b. Copford
Susannah Canfield, dau, unm, 11, Scholar, b. Birch, Essex
Matilda Canfield, dau, 8, b. Tollesbury, Essex
Henry Canfield, grandson, 2 mo, b. Copford
Just some thoughts. CP