The person currently at the top of this family tree is James Sergisson (1740-1813).  There are a number of variant surnames in this tree including: Sarganson, Sargantson, Serjeantson, Sergeson and Serjeantson. The Descendants of James SergissonCumbldDerby report includes more information on this family group and be dwonloaded.

If you spot any mistakes with this tree or have any further information you are willing to share with me then do please contact me.