You won't find a death record for David W. H. Bolding because he died before they were using them in Texas.
You can do a Google search for Marion County Texas Cemeteries and look for him in the inventoried cemeteries.
You can contact the Marion County Genelogical Society, www.rootsweb.ancestry.com/~txmarion/resources/MCGS.html
. They might have his death date, death notice in the local newspaper and cemetery info
Burial: Avinger Cemetery, Avinger, Cass, TX
which includes some family info.
The Cass County Genealogical Society, www.casscogensoc.org/WEB
FILES/ may be able to look up her death notice in the local newspaper microfilm.
I also found:
1900 Cass Co. TX
J. M. Bolding, b. Tx Sept 1856, M18yrs, proprietor shingle mill
D. E., wife, b. TX Dec 1865, 5/4 ch
Hattie L., b. TX April 1883
Leroy, b. TX Aug 1887
Veatrice, dau, b. TX Mch 1891
Lester, b. TX Aug 1895