I love puzzles. I went to Ancestry.com and entered both names, but only found Lucy Sims, 9/29/1893-7/77 (she died at age 84). Go to google.com and type in Kings Mountain, KY funeral homes. Contact them and ask who handled the funeral arrangements, and hopefully
find out about her husband Clarence. If you write, include a stamped, self-addressed envelope in which to receive a reply. You might also get info from a newspaper obituary. Follow the same procedure. Let us know how you make out.

Out of curiosity why didn't you return the document, explaining that these people were unknown to you, and ask for a refund?