The maps on this page show the distribution of the family group surnames for 1881 and 1998 that have been copied from the
Surname Profiler Project
which was originally on the University College of London
The names database of the Surname Profiler Project contains information on the size and geographical distribution of 25,630 family names.
To qualify for inclusion in this list there must have been at least one hundred entries under that family name in the Great Britain electoral register for 1996.