Thomas lived (1775-1849). Mary, his wife, lived (1790-1889). Thomas was a well-known actor on the American Stage.
Note: The stone has Thomas as having been born in 1776, however, records in England indicate that he was born in 1775 (cited: “Thomas Apthorpe Cooper Father of the American Stage 1775-1849," by F. Arant Maginnes, published 2004).