Ruth Eager Bannister was born 1 February 1677 in Cambridge, Middlesex County, Massachusetts to William Eager (1629-1690) and Ruth Hill (1641-1679) and died 25 December 1768 Marlborough, Middlesex County, Massachusetts of unspecified causes. She married John Bannister (1670-1730) 1 November 1695 in Marlborough, Middlesex County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| John Bannister (1696-1779) | 1696 Marlborough, Middlesex County, Massachusetts | 22 October 1779 Marlborough, Middlesex County, Massachusetts | Abigail Barker (1702-1727) Martha Rice (1703-1767) |
| Ruth Bannister (1698-1699) | |||
| Mary Bannister (1700-1736) | |||
| Jane Bannister (1705-) | |||
| Huldah Bannister (1707-) | |||
| Martha Bannister (1710-1728) | |||
| Sarah Bannister (1713-1728) | |||
Siblings
| Name | Birth | Death | Joined with |
| William Eager (1661-1661) | |||
| William Eager (1662-1684) | |||
| Zachariah Eager (1667-1742) | |||
| Abraham Eager (1670-1734) | 1670 Massachusetts | 25 October 1734 Shrewsbury, Worcester County, Massachusetts | Lydia Woods (1672-1739) |
| Zerubbabel Eager (1672-1747) | 8 June 1672 Cambridge, Middlesex County, Massachusetts | 9 January 1747 Marlborough, Middlesex County, Massachusetts | Hannah Kerley (1678-) |
| Martha Eager (1674-) | |||
| Ruth Eager (1677-1768) | 1 February 1677 Cambridge, Middlesex County, Massachusetts | 25 December 1768 Marlborough, Middlesex County, Massachusetts | John Bannister (1670-1730) |
| Sarah Eager (1679-) | |||