Sources

1) Source: The History of Parliament . External Link
http://www.historyofparliamentonline.org/volume/1386-1421/member/danvers-john-1449. Reference: Danvers, John (d.1449), of Calthorpe in Banbury and Prescote in Cropredy, Oxon. (Questionable reliability of evidence)
2) Source: Memorials of the Danvers family (of Dauntsey and Culworth): their ancestors and descendants from the conquest till the termination of the eighteenth century; with some account of the alliances of the family and of the places, where they were seated. Reference: Page 102 (Data from secondary evidence)