Even if you had a bathroom, one per house, often with the only loo in the bathroom was the norm for even large houses.
My DF was one of 11. My grandfather bought a big 7 bedroomed house. It had one bathroom (with the loo in it) for a household that could contain upto 13 people, although he did then install an extra loo under the stairs at ground level.
A generation later my sister and I lived with our grandparents for a couple of years in our teens. The household, with us, was then down to 8, and it never occurred to any of us that a second bathroom or an extra loo would be useful. Second bathrooms were unheard of.
Old sayings with a theme 2 ( continuing *nanna8*'s thread)
Last weekend, in Rutland, the first statue in Britain of the late Elizabeth II was unveiled.