Hello David My records in Lancashire/Cheshire only go back to Christmas and Dolly and their children;Benjamin Scoulding, Leticia Scolding , John Scolden, Henry Scolding and William Schoolden the 'Father' of the SCHOOLDEN line. I can find no others with the name or anything like it in the Lancashire area before Christmas.
However there is a Chrismas Scolden ch 7 Jan 1770 in Norwich; which could have been the birthplace of the above Christmas but it is a leap of faith to presume they are the same person with no corrobative evidence.
One of William Schoolden's sons, also William, went to the USA and is recorded initially as William Schooldon in Baltimore, Maryland and he and his wife Mary McConnell have a long line of descendants on the east coast of the USA.
Where did your John Scoulding family reside in the UK? Do they have Lancashire origins/connections? Have you learned anything of the origin of your name and its meaning? The Cheshire Schooldens are told their name has Dutch origins, I have been checking this but can find no evidence among Huguenot migrants that supports this.
Looks as though I am asking more questions than giving answers You seemed to have covered much of 'my ground'. Regards Harry