Okay, "...child of her niece."Let's think of all the different scenarios this could encompass --- Elizabeth's mother could be a Casselly or a Cochran ... or she could be referring to a niece by marriage and Wm. Martin might actually be her nephew ...?
Looking at Chas' burial --- wondering if that date refers to a "re-interment", that he was moved from Grave 7 to the new family grave?Can you PHONE the cemetery office and ask for clarification?
Do you assume the father WM Martin died or moved on?Born 1848 in St. Louis (where does this come from?)
Last COCHRAN First JOHN Middle LAURI Date of Death 05/22/1911 Spouse's Name Section 3 Lot 5 Part N Range 12 Division Maus / Lawn Crypt Row Grave Small Grave Niche Date of Interment 05/24/1911 Age 54 yrs. Parents Name SAMUEL & CELIA
Last COCHRAN First JUSTIN Middle Date of Death Spouse's Name Section 2 Lot Part Range R Division Maus / Lawn Crypt Row Grave 17 Small Grave Niche Date of Interment 05/20/1885 Age 25yrs Parents Name CECELIA