Mary Lavender was the daughter of Joseph Lavender and Ruth Rolfson.

Mary was born around 1750.

She was christened on Tuesday 20 January 1750 at Dudley, Worcestershire.

Mary married John Pinnock on Thursday 20 December 1770 in St Thomas' Church, Dudley, Worcestershire.

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

- Joseph Pinnock	born around 1771.
- Thomas Pinnock	born around 1773.
- Jenny Pinnock	born around 1774.
- John Pinnock	born around 1775.
- John Pinnock	born around 1776.
- Elizabeth Pinnock	born around 1777.
- William Pinnock	born around 1778.
- Mary Pinnock	born around 1779.
- Samuel Pinnock	born around 1781.
- Jane Pinnock	born around 1783.
- Mary Pinnock	born around 1788.
- Hannah Pinnock	born around 1791.

Details of Mary's death are not known.