I think I would look at the HAYNES familiy members in Brackley in 1841 and 1851.
1851:
Hannah Haynes, 61, widow, laundress, born in Bloxham, Oxfordshire c1790
daughter Hannah Haynes, unmarrried, 33, laundress pauper, born Brackley c1818
Robert Haynes, 44, ag lab, born Brackley c1807
wife Mary, 40, lace maker, born Oxfordshire c1811
(per Northamptonshire marriage index, Mary Padbury, married 1833 Brackley)
4 children born Brackley
Robert and family (including the Ann who is a servant in 1851) are there in 1841.
The Hannahs are Hains in 1841 in Brackley.
1851 also has
Isaac Haynes, 40, born in Warminster Wiltshire, in Brackley.
Thomas Haynes, 40, born in Brackley, in Newbury Berkshire.
Was Comfort of this parish when she married? If so, again, there is no glut of Hayne-ish surnames in Brackley.
The Northamptonshire marriage index shows only two male Hayne marriages pre-1837, but a gazillion Haynes marriages, so I would consider that her likely name rather than Hayne.
A John Haynes otp married a Hannah Plumb otp in Brackley in 1804.
Also, a Richard Haynes of Brackley married a Mary Coates otp in Wappenham in 1795.
And there are earlier marriages, one with spelling Hayns.
Then there is the Hain/Haines/Hains spelling: one in Brackley, John Haines/Stains to Elizabeth Parker 1798.
A Comfort Prestidge died in Brackley reg dist in 1842. In 1841, Anc'y has mistranscribed the name as Prestridge, in Morton Pinkney; she is abt 40, her apparent husband John, ag lab, is abt 35. But lo, after considering the possible traveller connections of the names, I have ruled her out: John Prestidge married Comfort Wilson, 1827, and her father is in that household. Ruling out is always part of the job.

A Comfort Lock died in Brackley in 1840; only the death cert would give more info. There is a family in Brackley mistranscribed as Lack at Anc'y (and what a lot of Locks mistranscribed as Lacks there are) and she is likely one of them.
John Haynes and Hannah Plumb look interesting, I think.
Children of theirs showing at FS are
Hannah 1815
Hannah 1817 (likely a replacement child)
and possibly Jane 1813 (mother shown as Ann)
I wonder ... I have Northamptonshire ancestors who had children named:
Ann Maria
Eliza Ann
Eliza Jane
Mary Ann
Mary Jane
in I always forget what order. Eliza Jane was mine, and was called Jane. Could one of the Hannahs have been Hannah Comfort?

There were also an unmarried Ann Haynes and an unmarried Sarah Haynes having children around the same time in Brackley.