Figure 33 Gravestone of Cuffe Gibbs by Pompe Stevens, Common Burying Ground, Newport, Rhode Island, 1768. (Photo, William Hosley.) The several dozen stones marking the graves of African slaves in Newports largest colonial burying ground is the largest concentration in New England. This stone is signed by an African American stonecutter, Pompe Stevens, who probably worked in the shop of John Stevens, Newports most skilled and prolific stonecutter.