I have scoured the register index and found the marriage, having carefully ruled out two feasible others by looking at censuses.
Marriage Dec Qtr 1841 : Kingston 4 199
BARNES Thomas
GOLDSMITH Fanny
24 October 1841 at Hampton, Middlesex
Thomas Barnes, of full age, Bachelor, Sawyer, residence Hampton, father Thomas Barnes, Sawyer
+
Fanny Goldsmith, of full age, Spinster, residence Hampton, father Edward Goldsmith, Servant
after Banns
Thomas marked, Fanny signed
wit L Smith, J V Richardson ? (not sure about those initials!)