This section includes family trees where the earliest known ancestor has been traced back to one of the counties of Cambridgeshire, Lincolnshire, Norfolk and Nottinghamshire. They include:

Derby and Nottinghamshire family tree – headed by Thomas Serginson, although most of the surnames in the tree are variants of Sargeson, Sargison, Sergison and Seargison.

Sargersons of Cambridgeshire – primarily Ely and the surrounding area.

Sargesons of Nottinghamshire and beyond – including a branch which emigrated to Australia.

Sargisons from three nearby counties – some of whom emigrated to Tasmania and New Zealand.

Sargissons of Hogsthorpe, Lincolnshire and USA – includes a branch which moved to Iowa , USA. The records in this tree also go back to an early surname variant: Sargisonne.

Sarjantsons from Crowle, Lincolnshire and the nearby West Riding of Yorkshire – the two main branches have been traced back to the mid 17th century.

The prime surname variants in these trees include: Sargeson, Sargison, Sargisson, Sarjantson and Serginson.