Up until the late 19th century (?), many houses had no numbers, just names. If you investigate relatives in different censuses who hadn't moved house, the address may have changed.
Houses built between the wars would have numbers, but the first owner would be asked to name the house, my gran told me. Either she or her next-door neighbour wanted a name that had already been taken in her rather long road, and had to choose another.
What decade were your grandparents born?


