It's harder searching the '41, isn't it? No place of birth, no relationship to head and adult ages rounded down

There are two Abrahams, one of which I think could be yours.
H107/837/31/54 and H107/837/32/66
Both 14 years old, one living with what appear to be parents Joseph and Elizabeth, the other living with John and Ann who, from their ages, are more likely to be grandparents.
As for Hannah Armstrong - millions of those in this area and I can't find any reference to Kingwater (from '51) to give any clues as to location.

Christine