I was just looking at the George family:
1871
RG10/475 43 11
Bethnal Green, London
30 Old Castle St
William George, head, 36, Carpenter & Joiner, b. London
Susan, wife, 36, b. do.
Sophia, dau, 14, b. Bethnal Green
John, son, 16, b. do.
Margaret, dau, 12, b. do.
not yet christened, dau, 1 month, b. do.
Big age gap between Margaret and the little one!
Sophia should be only 12 too, going by this birth registration:
Sophia Fanny Susannah George, Sep 1858 Bethnal Green 1c 207