Thomas Gardner Cox was born around 1770.

Thomas married Mary Stevens on Tuesday 22 February 1791 in St Helen's Church, Abingdon, Oxfordshire.

He had the following children from his marriage to Mary Stevens:

- John Cox	born around 1791.
- Thomas Ipsley Cox	born around 1793 in Abingdon, Berkshire.
- Richard Cox	born around 1800 in Abingdon, Berkshire.

Thomas was a Sack Weaver.

Details of Thomas's death are not known.