1950s - My house in Heaton St was originally my grandparents' and then the rent agreement was taken over by my parents, it was one of the posher houses in the street, it fronted Heaton St and had its own WC in the back yard (unlike the back to backs behind us where upto 8 houses shared a couple of WCs), the house had 3 bedrooms. My mother was the youngest of 11 children all born in that house, I can only approximate but on the basis there was a year between each child and my grandmother was 20 when she had the first she was either pregnant or caring for an infant for about 15 years, I can only imagine how 13 individuals lived in the house.
But get this - my grandfather had a wooden peg leg, his right leg badly deformed (due to botched surgery) permanently bent at right angles backwards clearly it didn't cramp his style - 11 children! The mind boggles and he was a contest-winning angler.
Peg.