Well, for years I was unable to find out anything about her because the birth certificate for Frances Ethel mistakenly said her mother's maiden name was Langton. It was only when I started digging again recently that I noticed on John Brunton's death certificate that his wife's name was Langley, and that the name Langley pops up in other family members names.
I must have used the "about 1840" record from I.G.I. because that was the only "Maria Frances Langley" born in Woolwich, but that one doesn't say who she married. That was where I saw the names Edward Langley and Mary Maria Marchant. I have since seen another entry there that doesn't give a birth place, or the parent's names, but does say 1848, and that she married John Brunton. No death year mentioned on that one.
So- that 1848 record would be correct, because I know that is definitely the right Maria Frances. But, since there are only 3 entries there for Maria Frances Langley, and they all contain information that I know to be true, I have to suspect that all 3 are referring to the same person, including the one that gives her parents names. Which is what I would like to find out! Does the 1848 birth record mention her parents?