RBL, you didn't read my original post properly!!
My mother made up the design herself. The rug was made by the 'prodding' method, and it was all from what we would now call 'reclaimed materials', ie potato sack and bits from discarded clothes.
Because it could not be washed, it eventually got too grimy and was discarded.
She did also make a 'Readicut' rug on a pre-printed canvas in an abstract design of colour blocks. Or rather, she started one, but never finished it. The wool was not cut into lengths but came in hanks. She used to wind it around a piece of wood (which was kept for the purpose) and then cut along the top and bottom to get lengths of the right size.
She kept it for years, and then I 'inherited' it and I had it for several years, always intending to finish it but never did so, and eventually, when we moved house, it was thrown away.