William was the first child of Thomas Jewell and Margery Derry, and was baptised on the 13th November 1662, in Menheniot Cornwall.
Unfortunately I couldn't find any record of a marriage invloving William however he does appear as the father of Mathias Jewell baptised on the 2nd of October 1681, at St Stephens in Brannel. It would appear William continued the migration south.
At this stage I have not been able to locate any other children, or any other information about William. If anyone has anymore information about William or you feel you may be a descendant of them, please contact me at firstname.lastname@example.org