AKA Slamerkin, Old Slamerkin, Miss Slamerkin
Apparently undefeated on the racecourse although full details of her racing record have not survived
1773 - Four Year Old Plate Newmarket, South Carolina; 1773 - Four Year Old Plate Philadelphia (beating the previously undefeated Sprightly)
An outstanding broodmare
Maria Slamerkin is a tail female ancestress of the great racehorse and stallion Nearco, tail male ancestor of Northern Dancer, Sadler's Wells, Galileo and Frankel
Apparently died in VA in the property of Col. John Hoomes and was buried near the Appomattox. Diomed was allegedly buried next to her later. YOB from book (1934, by Fairfax Harrison): Early American Turf-Stock, 1730-1830.