Peggy was born 21 September 1788 to Walter Smith and Ann Mackall (1753-1789) and died 14 August 1852 of unspecified causes. She married Zachary Taylor (1784-1850) 21 June 1810 .
Children
| Name | Birth | Death | Joined with |
| Anne Margaret Mackall Taylor (1811-1875) | |||
| Sarah Knox Taylor (1814-1835) | 6 March 1814 Ft. Knox II, Vincennes, Indiana, United States | 15 September 1835 St. Francisville, Louisiana, United States ((at Davis's sister's home)) | Jefferson Finis Davis (1808-1889) |
| Octavia Pannill Taylor (1816-1820) | |||
| Mary Smith Taylor (1819-1820) | |||
| Mary Elizabeth Taylor (1824-1909) | |||
| Richard Taylor (1826-1879) | |||