The house, estimated date 1830's, was originally built, obviously, without a bathroom. There may have been baths taken, of course, most likely in the kitchen. Our neighbor across the street had a yard sale last week and described someone near here, parents, aunt? I can't remember, who for many years had their first tub in the kitchen, with a loose enameled table-top to cover it when it was not in use, and a toilet in the pantry. So. Quite sure this house did not have a bathroom in its early days.
Of course it does now. When was it originally put in? I think in whatever days before showers, the days of clawfoot tubs, when toilets were still water closets with the tank installed at the ceiling, above, and so fed by gravity.
Because, our tub is tucked in under the eaves, which might be a nice cozy spot for a clawfoot but where noone in their right minds who was normally heighted, would ever put a shower. And the toilet is in the only corner with full ceiling height, where it would be feasible to put a watercloset. Like so.
Here is a shot of the toilet and tub, side by side: