If you go to the Nansemond County, VA GEN WEB site (http://www.rootsweb.com/~vanansem/
) and click on 'Cemeteries', and then on 'Nansemond Cemeteries Vol. 1', you will find an accounting of those that are assumed to be buried on this site. I say assumed because of the following:
"MILLS RIDDICK FAMILY CEMETERY
MILLS RIDDICK FARM "OLD PLACE" ORGINALLY, NOW (1996) BELONGS TO FRANK CASE,
2080 WHITE MARSH ROAD, SUFFOLK, VA."
"THE ADULTS ARE MENTIONED IN FILLMORE NORFLEET'S BOOKS OR RIDDICK GENEOLOGY
BOOKLET AS BURIED HERE. I AM ASSUMING THEIR INFANTS OR CHILDREN THAT DIED ARE
ALSO BURIED HERE SO I HAVE INCLUDED THEM. THE CEMETERY IS OVER GROWN AND MANY
OF THE STONES HAVE BROKEN OR HAVE BEEN TURNED OVER AND BURIED. THE NAMES WERE
NOT COLLECTED FROM THE CEMETERY ITSELF."
I have the Filmore Norfleet book mentioned, and here is what is says about your Washington Layfayette Riddick:
"Mills Riddick (b. April 3, 1780 - d. Sept. 5, 1844, in Suffolk) married October 27, 1803, Mary Taylor (1788 - 1875) and had issue fourteen children, among whom were some very substantial citizens: . . . (1 - 9). . . , 10. Washington Lafayette (b. 1825 - 1871, in New Orleans) a lawyer in Suffolk, m. 1844, Frances Marion Blount (b. 1825, at "Belmont," Southampton Co.)"
I'm not sure what is meant by the New Orleans. Could he have died in New Orleans? While you're at the Nansemond County website, check out the Cedar Hill Cemetery burials. There are a whole bunch of Riddicks there as well.
Hope this helps.