John de Stopham, III - Secondary sources for Stophams

https://www.geni.com/documents/view?doc_id=6000000163622902833
https://www.geni.com/documents/view?doc_id=6000000163607058821
https://www.geni.com/documents/view?doc_id=6000000163619306823
https://www.geni.com/documents/view?doc_id=6000000163604248548

This is a good one to start:
"NOTE. - The early part of this Pedigree has been chiefly taken from a MS. Roll of the 16th century, in the possession of Sir Walter B. Barttelot, Bart.; but its statements except where substantiated by references to records must be accepted with caution. The unsubstantiated statements are enclosed within square brackets."
https://books.google.ru/books?id=a4UuAAAAMAAJ&q=Stopham#v=snipp...