Where the Wainwrights have lived

My mother was a Wainwright from near Nantwich in Cheshire. In 1881 (L map) the Wainwrights were concentrated in the north-east of the English midlands and in mid-Wales. By 1998 (R), they were still there, but had also spread across to South Yorkshire.

Purple and then red show the highest concentrations, then brown and yellow.
Data from Surname Profiler.