"History of Hertfordshire, containing an account of the descents of the various manor, pedigrees of families connected with the county, antiquities, local customs, &c., &c : Museum, parochial registers, local archives and collections in the possession of private families, Vol. 1. History of the hundreds of Braughing, Edwinstree, and Odsey"
"Cussans, John Edwin"
"England, Hertford - History
England, Hertford - Genealogy
England, Hertford - Description and travel
Family History Library; http://www.familysearch.org/