Mary Farmer was born around 1739.

She was christened on Saturday 19 December 1739 at All Saints Church, Alrewas, Staffordshire.

Mary married John Greenhough on Sunday 7 December 1760 in All Saints Church, Alrewas, Staffordshire.

She had the following children from her marriage to John Greenhough:

- John Greenhough	born around 1762.
- Mary Greenhough	born around 1764.
- Thomas Greenhough	born around 1768.
- Richard Greenhough	born around 1769.
- Joseph Greenhough	born around 1773.
- Hannah Greenhough	born around 1781.
- Sarah Greenhough	born around 1784.

Details of Mary's death are not known.

A John and Mary Greenoak died of putrid fever in January 1791 in Fradley. Despite the spelling of their surname, it is thought that it could be this Mary and her husband.