A copy of the death certificate of Eliz. A. Clark http://www.tennessee.gov/tsla/history/vital/tndeath.htm can be obtained from the TN State Lib & Archives. The Tennessee State Library and Archives had an online index of death certificates that spans 1908-1912 (http://www.tennessee.gov/tsla/history/vital/death2.htm) & 1914-1928 (http://www.tennessee.gov/tsla/history/vital/tndeath.htm). They a regularly add years to the latter, so it's worth continuing to check back. At the TSLA itself, you can access death certificates up to 1958. Also, the Shelby County Register of Deeds site had a statewide index of deaths from 1949-2005 which includes Davidson County - http://register.shelby.tn.us/ I hope this helps you find what you're looking for.