Mary Lavinia Lavender was the daughter of Joseph Lavender and Mary Rowney.

Mary was born around 1781.

She was christened in 1783.

Mary married William Byrch on Saturday 29 June 1805.

She had the following children from her marriage to William Byrch:

- William Abraham Byrch	born around 1807 in Evesham, Worcestershire.
- Henry Lavender Byrch	born around 1814 in Evesham, Worcestershire.

Details of Mary's death are not known.