Mary was born in 1755 in Kirton in Lindsey.

She died on an unknown date in an unknown place.

She was the daughter of John Elsom.

She was the daughter of Elizabeth.

She was the sister of Ann Elsom (1752 ‒ unknown).

She was the sister of Jane Elsom (1758 ‒ unknown).

She was the sister of Elias Elsom (1761 ‒ unknown).