The following map, derived from the 1881 census in Great Britain, show the occurrences of Sergison’s (source: the British 19thCentury Surname Atlas ver1.20 www.archersoftware.co.uk):

Sergison map
The following map, derived from the 1881 census in Great Britain, show the occurrences of Sergison’s (source: the British 19thCentury Surname Atlas ver1.20 www.archersoftware.co.uk):
Sergison map