|Cemetery notes and/or description:|
St Mary's Cemetery was located in Section 1, St Mary's twp, and East of the old St Mary's steamboat landing. Early 19th and 20th century flooding of the Missouri River swept away many headstones. The last in 1952, ravaged what was left, leaving a deep pond where the site used to be.
iagenweb.org indicates there were several member's of DeLisle family buried here.