Here's a link the the findagrave.com records for members of the Markham family buried in Limestone County, Texas. http://www.findagrave.com/cgi-bin/fg.cgi?page=gsr&GSfn=&...
All but three are from the Kosse Cemetery, but two of those three are for Nimrod Markham (1818-1884) and Eliza Ann Burns Markham (1822 - 1900). Their son Henry Clay Markham (
1848 - 1916) has many other family member's grace records linked to his.
Hope this helps!