In 1881 (left) the Patrick surname appears in two clusters: in Southern Scotland and in Northamptonshire extending eastwards towards Norwich (hotspots are purple fading to red then through brown to yellow). By 1998 (below) the Scottish "branch" of the Patricks had spread westward and northward. The English "branch" did the same, spreading into Derbyshire and Cheshire. The frequency in Staffordshire was not high at either date.
[Data from Surname Profiler; UCL]
