Thanks to Forte's pointer, I found Walter Walker & Family, now digging further. As for Margaret Walker, my grandmother, I found her, sister Frances, and her Mother Margaret in the 1901 census, but no trace on the 1911. Both sisters had their father John listed as deceased on their marriage certificates, and he was not listed at the address in 1901. Family rumours mention the workhouse may be involved somewhere, and I wonder if perhaps their Mother Margaret died whilst they were young, and they were taken in to the workhouse ? Is there a way of finding residents of these establishments on Ancestry ?