Everett, here's the man you are looking for as they have it on this site..Perhaps, more can be added in time for you on this.

Oklahoma Civil War Veteran Burials--by Mahlon and John Erickson

http://www.geocities.com/Heartland/Forest/7014/okcwvetso.htm
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Hugh H. Oneill--1830--1900-- vet--Custer Mound Valley--Thomas, OK
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Gay