Hi Tracy
I found this on 1851 census which might fit
HO107/2374/225 pg 3
Robert Harland, 32, Head, Fisherman
Esther Harland, 34, Wife
Elizabeth Harland, 10, daughter
Mary Harland, 2, daughter
Living in Henrietta Street, Whitby
and on 1861 census again in Henrietta Street
RG9/3647/6 pg5
Esther Harland, 37, Widow, Fisherman's wid
Alice Harland, 13, dau
Mary Harland, 9, dau
Jane Harland, 8, dau
Esther Harland, 4, dau
Hanh Harland, 2, dau
Robert Harland, 18, son
So maybe it was mum who got confused over her age not her herself, or possibly the first Mary died and this was Mary number 2?
And as Robert was down at the bottom although it says he is aged 18, I wonder whether he is actually 18 months?
Can you tell me what church Mary's marriage took place as that may also be where the baptisms were.
Anna