While home to visit my parents in Tishomingo, OK over the Thanksgiving holiday, I went to Eli Columbus's gravesite and wrote down the information for everyone. Eli and his wife Mary Weems are buried in Oakland Cemetery, just outside of Madill, OK. Both names are written on one headstone--Eli's information on the left, Mary's on the right. Harkey (centered on the stone) On the left: Eli C. July 10, 1850 Mar. 16, 1905 On the right: Mary Weems July 3, 1854 Dec. 21, 1924 Hope this helps!