Genealogy of the Nances in Cornwall @ John Fitz Alan, Lord of Clun and Oswestry, Salop, no parents
The cited information was published by 1970 (Ref: John Fitz Alan, Lord of Clun and Oswestry, Salop, no parents) The author/originator was Martin L. "Pete" Nance.
Source Notes
Originally a newsletter sent to purchasers of his book "The Nance Register"