Mary Ann Critchley was the daughter of Robert Critchley and Margaret Nicholson.

Mary was born on Sunday 26 March 1843 in Warrington, Lancashire.

Mary married Thomas Sparks in 1866 in Widnes, Lancashire.

She had the following children from her marriage to Thomas Sparks:

- Alfred Critchley	born on 8 May 1865 in Widnes, Lancashire.
- Emily Sparks	born around 1869 in Widnes, Lancashire.
- George Sparks	born around 1872 in Widnes, Lancashire.
- Elizabeth Sparks	born around 1875 in Widnes, Lancashire.
- Thomas Sparks	born around 1877 in Widnes, Lancashire.
- Jane Sparks	born around 1879 in Widnes, Lancashire.
- Margaret Sparks	born around 1882 in Widnes, Lancashire.
- Martha Sparks	born around 1885 in Widnes, Lancashire.

Details of Mary's death are not known.

Census Data:

Year	Address
1851	Winwick Street [2], Warrington, Lancashire.
1881	3, Violet Street, Widnes, Lancashire.
1891	3 Violet Street, Widnes,Lancashire.