Ann Chew was born circa 1703 in Virginia, United States of America to Larkin Chew (c1675-1728) and Hannah Roy (c1680-1734) and died 2 November 1742 Spotsylvania County, Virginia, United States of America of unspecified causes. She married William Johnston (1697-1778) 12 October 1723 in Virginia, United States.
Children
| Name | Birth | Death | Joined with |
| Nancy Ann Johnson (c1724-?) | 1724 Spotsylvania County, Virginia (Spotsylvania County, Virginia) | 1788 Orange County, Virginia, United States of America | Philip Ballard (c1722-1778) |
| Larkin Johnston (1727-1816) | |||
Siblings
| Name | Birth | Death | Joined with |
| Joseph Chew (c1695-c1696) | |||
| Thomas Chew (c1700-1782) | |||
| Jane Chew (c1700-1766) | |||
| Ann Chew (1703-1742) | 1703 Virginia, United States of America | 2 November 1742 Spotsylvania County, Virginia, United States of America | William Johnston (1697-1778) |
| John Chew (c1703-1742) | |||
| Larkin Chew (c1710-1770) | |||