I don't know if I can be of any help to you both. I have the family tree
of Sir Andrew Chadwick who married Margaret Humfrey and died in 1768. I
also have a detailed family tree of the Chadwicks of Mavesyn Ridware
(Staffordshire) and Healey but sadly I have no knowledge of the Sir Andrew
Chadwick who died about 1826.
Antony Page
apage(a)compuserve.com