Mary Johnson was born 25 August 1604 in Llangollen, Denbighshire, Wales, United Kingdom and died 27 September 1694 Haverhill, Massachusetts, United States of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| Jane Peaslee (1627-1689) | 8 September 1627 Chipping Sodbury, Gloucestershire, England, United Kingdom | 28 May 1689 Dover, New Hampshire, United States | John Davis (1621-1686) |
Siblings