And that would make total sense - her a minister's widow with several young children and not much money at a guess.
Let's hope that someone can find the marriage record. With dissenters it is not always straightforward. As I understand it, their chapels were allowed to do baptisms (a religious ceremony) but not marriages (because it is a legal/civil ceremony as well as religious). So they either had to go to a Church of England church or else go to London where I think [not sure here] there were a few places where dissenters could be married.
F
PS
Have you contacted the Essex Record Office?
Their reference D/NC 22/43 is information about London Road Chapel in Chelmsford.
Memorials to: Revd. John Gibbons, pastor, d.1763 Revd. Sam. Douglas, pastor, d.1820 Revd. George Wilkinson, pastor, d.1903 Revd. Thomas McDougall Mundle, pastor, d.1920 William Johns, d.1822, Jos. Woodcock, d.1829, and Thomas Hodges, d.1840
Also photograph of grave of Revd. Samuel Douglas and Revd. John Gibbons
contact:
ero.enquiry AT essex.gov.uk