Hannah Willis Collins, wife of Moses Collins Sr., mother of Moses Jr. and ten other children, a daughter of William and Susan Toney Willis b. 12/10/1754 m. 8/6/1774 d. 1833

There are differing conclusions drawn regarding the parents of Susan. A site that gives much information on this family:
http://msgw.org/scott/familytrees/Mosescollins.html

There is another Find a Grave Memorial for Hannah at 119269458 with an indication that the place of burial is unknown. While a grave stone has not been found, the location of the family plantation Cemetery is noted in Mary Collins Landon Book.1982.
Quoting from that book: "This cemetery was a small family plot on the plantation of Moses Collins Jr between Dry Grove and Lebanon located in either section 33 or 34, T4N R3W in Hinds County, Mississippi.
The Collinses lived there 10-15 years before moving to DeSoto Parish, Louisiana

Only two graves known to be in this family plot.
Hannah Willis Collins, wife of Moses Collins Sr., mother of Moses Jr. and ten other children, a daughter of William and Susan Toney Willis b. 12/10/1754 m. 8/6/1774 d. 1833
and Elizabeth Zachary Collins, first wife of Moses Collins Jr., mother of John Hampton Collins and Moses Zachary Collins and nine other children, daughter of Benjamin and Elizabeth Odom Zachary b. about 1784 d. 1827 Hinds Co. m. 5/26/1802 in Richmond Co., GA"∼A burial site has not been discovered for Hannah Collins. She married Moses Collins on 6 August 1774 in Orangeburg Dist., SC. Her father was William Willis. Her mother was Susannah Toney daughter of Edmond Toney b. 1690 in New Kent County, VA. Her step mother was Mrs. Susanna Odom Toney, the widow of Charles Toney, a Revolutionary War veteran. William Willis married Susanna Odom Toney in 1789 at the time he placed a memorial of their marriage in the Moses Collins family Bible.