Mary Colley was born 11 July 1723 in Carbury, County Kildare, Ireland to Henry Colley (c1685-1723) and Mary Hamilton (bef1704-) and died 7 April 1794 Kildare Street, Dublin, Ireland of unspecified causes. She married Arthur Pomeroy, 1st Viscount Harberton (1723-1798) 20 October 1747 in County Kildare, Ireland.
Children
| Name | Birth | Death | Joined with |
| Henry Pomeroy, 2nd Viscount Harberton (1740-1829) | |||
| Arthur James Pomeroy, 3rd Viscount Harberton (1753-1832) | |||
| Henrietta Judith Pomeroy (1754-1778) | |||
| Mary Pomeroy (1757-1778) | |||
| John Pomeroy, 4th Viscount Harberton (1758-1833) | 1758 | 1833 | Esther Spencer (?-?) |
Footnotes (including sources)
| ‡ General |
|