One source has Isaac's date of death as September 30, 1964.
This picture provided courtesy of Scott Williams:
About 1907 - Robert Castellaw, Daniel Castellaw, Isaac Castellaw,
baby Finis Brant Castellaw, Robert Jefferson Castellaw, Zula Watridge Castellaw, Irene Castellaw.
This school picture on tngenweb.org was contributed by Kelly Russell, in honor of his mother, Willie Elizabeth Elder Russell, and grandmother, Hattie Lee Jones.
www.tngenweb.org/haywood/schools/holgrvsch.htm - 1907 Holly Grove School Picture - Isaac Castellaw is the first child in the bottom row.
Martha Jean Wilson Mann, niece-in-law to Isaac Castellaw
Sandra Presley Smith, great niece to Isaac Castellaw
Scott Williams, great nephew to Isaac Castellaw
heritagequestonline.com - Haywood County, TN 1900 US Federal Census (image)
heritagequestonline.com - Haywood County, TN 1910 US Federal Census (image)
familysearch.org - Tennessee Marriages 1796-1950 (transcription)
heritagequestonline.com - Haywood County, TN 1920 US Federal Census (image)
familysearch.org - Haywood County, TN 1930 US Federal Census (transcription)
familysearch.org - Social Security Death Index
ancestry.com - Department of Veterans Affairs BIRLS Death File 1850-2010
register.shelby.tn.us - Tennessee Death Records 1949-2005
haywoodcountyline.com - Zula Zera Watridge Castellaw obituary (transcription)
haywoodcountyline.com - R E Castellaw obituary (transcription)
obits.dignitymemorial.com - Virginia Hess Castellaw Caradine obituary